Dear Groestlers, it goes without saying that 2020 has been a difficult time for millions of people worldwide. The groestlcoin team would like to take this opportunity to wish everyone our best to everyone coping with the direct and indirect effects of COVID-19. Let it bring out the best in us all and show that collectively, we can conquer anything.
The centralised banks and our national governments are facing unprecedented times with interest rates worldwide dropping to record lows in places. Rest assured that this can only strengthen the fundamentals of all decentralised cryptocurrencies and the vision that was seeded with Satoshi's Bitcoin whitepaper over 10 years ago. Despite everything that has been thrown at us this year, the show must go on and the team will still progress and advance to continue the momentum that we have developed over the past 6 years.
In addition to this, we'd like to remind you all that this is Groestlcoin's 6th Birthday release! In terms of price there have been some crazy highs and lows over the years (with highs of around $2.60 and lows of $0.000077!), but in terms of value– Groestlcoin just keeps getting more valuable! In these uncertain times, one thing remains clear – Groestlcoin will keep going and keep innovating regardless. On with what has been worked on and completed over the past few months.
UPDATED - Groestlcoin Core 2.18.2
This is a major release of Groestlcoin Core with many protocol level improvements and code optimizations, featuring the technical equivalent of Bitcoin v0.18.2 but with Groestlcoin-specific patches. On a general level, most of what is new is a new 'Groestlcoin-wallet' tool which is now distributed alongside Groestlcoin Core's other executables. NOTE: The 'Account' API has been removed from this version which was typically used in some tip bots. Please ensure you check the release notes from 2.17.2 for details on replacing this functionality.
- Builds are now done through Gitian
- Calls to getblocktemplate will fail if the segwit rule is not specified. Calling getblocktemplate without segwit specified is almost certainly a misconfiguration since doing so results in lower rewards for the miner. Failed calls will produce an error message describing how to enable the segwit rule.
- A warning is printed if an unrecognized section name is used in the configuration file. Recognized sections are [test], [main], and [regtest].
- Four new options are available for configuring the maximum number of messages that ZMQ will queue in memory (the "high water mark") before dropping additional messages. The default value is 1,000, the same as was used for previous releases.
- The rpcallowip option can no longer be used to automatically listen on all network interfaces. Instead, the rpcbind parameter must be used to specify the IP addresses to listen on. Listening for RPC commands over a public network connection is insecure and should be disabled, so a warning is now printed if a user selects such a configuration. If you need to expose RPC in order to use a tool like Docker, ensure you only bind RPC to your localhost, e.g. docker run [...] -p 127.0.0.1:1441:1441 (this is an extra :1441 over the normal Docker port specification).
- The rpcpassword option now causes a startup error if the password set in the configuration file contains a hash character (#), as it's ambiguous whether the hash character is meant for the password or as a comment.
- The whitelistforcerelay option is used to relay transactions from whitelisted peers even when not accepted to the mempool. This option now defaults to being off, so that changes in policy and disconnect/ban behavior will not cause a node that is whitelisting another to be dropped by peers.
- A new short about the JSON-RPC interface describes cases where the results of anRPC might contain inconsistencies between data sourced from differentsubsystems, such as wallet state and mempool state.
- A new document (https://github.com/groestlcoin/groestlcoin/blob/mastedoc/groestlcoin-conf.md) about the groestlcoin.conf file describes how to use it to configure Groestlcoin Core.
- A new document introduces Groestlcoin Core's BIP174 interface, which is used to allow multiple programs to collaboratively work to create, sign, and broadcast new transactions. This is useful for offline (cold storage) wallets, multisig wallets, coinjoin implementations, and many other cases where two or more programs need to interact to generate a complete transaction.
- The output script descriptor (https://github.com/groestlcoin/groestlcoin/blob/mastedoc/descriptors.md) documentation has been updated with information about new features in this still-developing language for describing the output scripts that a wallet or other program wants to receive notifications for, such as which addresses it wants to know received payments. The language is currently used in multiple new and updated RPCs described in these release notes and is expected to be adapted to other RPCs and to the underlying wallet structure.
- A new --disable-bip70 option may be passed to ./configure to prevent Groestlcoin-Qt from being built with support for the BIP70 payment protocol or from linking libssl. As the payment protocol has exposed Groestlcoin Core to libssl vulnerabilities in the past, builders who don't need BIP70 support are encouraged to use this option to reduce their exposure to future vulnerabilities.
- The minimum required version of Qt (when building the GUI) has been increased from 5.2 to 5.5.1 (the depends system provides 5.9.7)
- getnodeaddresses returns peer addresses known to this node. It may be used to find nodes to connect to without using a DNS seeder.
- listwalletdir returns a list of wallets in the wallet directory (either the default wallet directory or the directory configured bythe -walletdir parameter).
- getrpcinfo returns runtime details of the RPC server. Currently, it returns an array of the currently active commands and how long they've been running.
- deriveaddresses returns one or more addresses corresponding to an output descriptor.
- getdescriptorinfo accepts a descriptor and returns information aboutit, including its computed checksum.
- joinpsbts merges multiple distinct PSBTs into a single PSBT. The multiple PSBTs must have different inputs. The resulting PSBT will contain every input and output from all the PSBTs. Any signatures provided in any of the PSBTs will be dropped.
- analyzepsbt examines a PSBT and provides information about what the PSBT contains and the next steps that need to be taken in order to complete the transaction. For each input of a PSBT, analyze psbt provides information about what information is missing for that input, including whether a UTXO needs to be provided, what pubkeys still need to be provided, which scripts need to be provided, and what signatures are still needed. Every input will also list which role is needed to complete that input, and analyzepsbt will also list the next role in general needed to complete the PSBT. analyzepsbt will also provide the estimated fee rate and estimated virtual size of the completed transaction if it has enough information to do so.
- utxoupdatepsbt searches the set of Unspent Transaction Outputs (UTXOs) to find the outputs being spent by the partial transaction. PSBTs need to have the UTXOs being spent to be provided because the signing algorithm requires information from the UTXO being spent. For segwit inputs, only the UTXO itself is necessary. For non-segwit outputs, the entire previous transaction is needed so that signers can be sure that they are signing the correct thing. Unfortunately, because the UTXO set only contains UTXOs and not full transactions, utxoupdatepsbt will only add the UTXO for segwit inputs.
- getpeerinfo now returns an additional minfeefilter field set to the peer's BIP133 fee filter. You can use this to detect that you have peers that are willing to accept transactions below the default minimum relay fee.
- The mempool RPCs, such as getrawmempool with verbose=true, now return an additional "bip125-replaceable" value indicating whether thetransaction (or its unconfirmed ancestors) opts-in to asking nodes and miners to replace it with a higher-feerate transaction spending any of the same inputs.
- settxfee previously silently ignored attempts to set the fee below the allowed minimums. It now prints a warning. The special value of"0" may still be used to request the minimum value.
- getaddressinfo now provides an ischange field indicating whether the wallet used the address in a change output.
- importmulti has been updated to support P2WSH, P2WPKH, P2SH-P2WPKH, and P2SH-P2WSH. Requests for P2WSH and P2SH-P2WSH accept an additional witnessscript parameter.
- importmulti now returns an additional warnings field for each request with an array of strings explaining when fields are being ignored or are inconsistent, if there are any.
- getaddressinfo now returns an additional solvable Boolean field when Groestlcoin Core knows enough about the address's scriptPubKey, optional redeemScript, and optional witnessScript for the wallet to be able to generate an unsigned input spending funds sent to that address.
- The getaddressinfo, listunspent, and scantxoutset RPCs now return an additional desc field that contains an output descriptor containing all key paths and signing information for the address (except for the private key). The desc field is only returned for getaddressinfo and listunspent when the address is solvable.
- importprivkey will preserve previously-set labels for addresses or public keys corresponding to the private key being imported. For example, if you imported a watch-only address with the label "coldwallet" in earlier releases of Groestlcoin Core, subsequently importing the private key would default to resetting the address's label to the default empty-string label (""). In this release, the previous label of "cold wallet" will be retained. If you optionally specify any label besides the default when calling importprivkey, the new label will be applied to the address.
- getmininginfo now omits currentblockweight and currentblocktx when a block was never assembled via RPC on this node.
- The getrawtransaction RPC & REST endpoints no longer check the unspent UTXO set for a transaction. The remaining behaviors are as follows:
- If a blockhash is provided, check the corresponding block.
- If no blockhash is provided, check the mempool.
- If no blockhash is provided but txindex is enabled, also check txindex.
- unloadwallet is now synchronous, meaning it will not return until the wallet is fully unloaded.
- importmulti now supports importing of addresses from descriptors. A desc parameter can be provided instead of the "scriptPubKey" in are quest, as well as an optional range for ranged descriptors to specify the start and end of the range to import. Descriptors with key origin information imported through importmulti will have their key origin information stored in the wallet for use with creating PSBTs.
- listunspent has been modified so that it also returns witnessScript, the witness script in the case of a P2WSH orP2SH-P2WSH output.
- createwallet now has an optional blank argument that can be used to create a blank wallet. Blank wallets do not have any keys or HDseed. They cannot be opened in software older than 2.18.2. Once a blank wallet has a HD seed set (by using sethdseed) or private keys, scripts, addresses, and other watch only things have been imported, the wallet is no longer blank and can be opened in 2.17.2. Encrypting a blank wallet will also set a HD seed for it.
- signrawtransaction is removed after being deprecated and hidden behind a special configuration option in version 2.17.2.
- The 'account' API is removed after being deprecated in v2.17.2 The 'label' API was introduced in v2.17.2 as a replacement for accounts. See the release notes from v2.17.2 for a full description of the changes from the 'account' API to the 'label' API.
- addwitnessaddress is removed after being deprecated in version 2.16.0.
- generate is deprecated and will be fully removed in a subsequent major version. This RPC is only used for testing, but its implementation reached across multiple subsystems (wallet and mining), so it is being deprecated to simplify the wallet-node interface. Projects that are using generate for testing purposes should transition to using the generatetoaddress RPC, which does not require or use the wallet component. Calling generatetoaddress with an address returned by the getnewaddress RPC gives the same functionality as the old generate RPC. To continue using generate in this version, restart groestlcoind with the -deprecatedrpc=generate configuration option.
- Be reminded that parts of the validateaddress command have been deprecated and moved to getaddressinfo. The following deprecated fields have moved to getaddressinfo: ismine, iswatchonly,script, hex, pubkeys, sigsrequired, pubkey, embedded,iscompressed, label, timestamp, hdkeypath, hdmasterkeyid.
- The addresses field has been removed from the validateaddressand getaddressinfo RPC methods. This field was confusing since it referred to public keys using their P2PKH address. Clients should use the embedded.address field for P2SH or P2WSH wrapped addresses, and pubkeys for inspecting multisig participants.
- A new /rest/blockhashbyheight/ endpoint is added for fetching the hash of the block in the current best blockchain based on its height (how many blocks it is after the Genesis Block).
- A new Window menu is added alongside the existing File, Settings, and Help menus. Several items from the other menus that opened new windows have been moved to this new Window menu.
- In the Send tab, the checkbox for "pay only the required fee" has been removed. Instead, the user can simply decrease the value in the Custom Fee rate field all the way down to the node's configured minimumrelay fee.
- In the Overview tab, the watch-only balance will be the only balance shown if the wallet was created using the createwallet RPC and thedisable_private_keys parameter was set to true.
- The launch-on-startup option is no longer available on macOS if compiled with macosx min version greater than 10.11 (useCXXFLAGS="-mmacosx-version-min=10.11" CFLAGS="-mmacosx-version-min=10.11" for setting the deployment sdkversion)
- A new groestlcoin-wallet tool is now distributed alongside Groestlcoin Core's other executables. Without needing to use any RPCs, this tool can currently create a new wallet file or display some basic information about an existing wallet, such as whether the wallet is encrypted, whether it uses an HD seed, how many transactions it contains, and how many address book entries it has.
- Since version 2.16.0, Groestlcoin Core's built-in wallet has defaulted to generating P2SH-wrapped segwit addresses when users want to receive payments. These addresses are backwards compatible with all widely used software. Starting with Groestlcoin Core 2.20.1 (expected about a year after 2.18.2), Groestlcoin Core will default to native segwitaddresses (bech32) that provide additional fee savings and other benefits. Currently, many wallets and services already support sending to bech32 addresses, and if the Groestlcoin Core project sees enough additional adoption, it will instead default to bech32 receiving addresses in Groestlcoin Core 2.19.1. P2SH-wrapped segwit addresses will continue to be provided if the user requests them in the GUI or by RPC, and anyone who doesn't want the update will be able to configure their default address type. (Similarly, pioneering users who want to change their default now may set the addresstype=bech32 configuration option in any Groestlcoin Core release from 2.16.0 up.)
- BIP 61 reject messages are now deprecated. Reject messages have no use case on the P2P network and are only logged for debugging by most network nodes. Furthermore, they increase bandwidth and can be harmful for privacy and security. It has been possible to disable BIP 61 messages since v2.17.2 with the -enablebip61=0 option. BIP 61 messages will be disabled by default in a future version, before being removed entirely.
- The submitblock RPC previously returned the reason a rejected block was invalid the first time it processed that block but returned a generic "duplicate" rejection message on subsequent occasions it processed the same block. It now always returns the fundamental reason for rejecting an invalid block and only returns "duplicate" for valid blocks it has already accepted.
- A new submitheader RPC allows submitting block headers independently from their block. This is likely only useful for testing.
- The signrawtransactionwithkey and signrawtransactionwithwallet RPCs have been modified so that they also optionally accept a witnessScript, the witness script in the case of a P2WSH orP2SH-P2WSH output. This is compatible with the change to listunspent.
- For the walletprocesspsbt and walletcreatefundedpsbt RPCs, if thebip32derivs parameter is set to true but the key metadata for a public key has not been updated yet, then that key will have a derivation path as if it were just an independent key (i.e. no derivation path and its master fingerprint is itself).
- The -usehd configuration option was removed in version 2.16.0 From that version onwards, all new wallets created are hierarchical deterministic wallets. This release makes specifying -usehd an invalid configuration option.
- This release allows peers that your node automatically disconnected for misbehaviour (e.g. sending invalid data) to reconnect to your node if you have unused incoming connection slots. If your slots fill up, a misbehaving node will be disconnected to make room for nodes without a history of problems (unless the misbehaving node helps your node in some other way, such as by connecting to a part of the Internet from which you don't have many other peers). Previously, Groestlcoin Core banned the IP addresses of misbehaving peers for a period (default of 1 day); this was easily circumvented by attackers with multiple IP addresses. If you manually ban a peer, such as by using the setban RPC, all connections from that peer will still be rejected.
- The key metadata will need to be upgraded the first time that the HDseed is available. For unencrypted wallets this will occur on wallet loading. For encrypted wallets this will occur the first time the wallet is unlocked.
- Newly encrypted wallets will no longer require restarting the software. Instead such wallets will be completely unloaded and reloaded to achieve the same effect.
- A sub-project of Bitcoin Core now provides Hardware Wallet Interaction (HWI) scripts that allow command-line users to use several popular hardware key management devices with Groestlcoin Core. See their project page for details.
- This release changes the Random Number Generator (RNG) used from OpenSSL to Groestlcoin Core's own implementation, although entropy gathered by Groestlcoin Core is fed out to OpenSSL and then read back in when the program needs strong randomness. This moves Groestlcoin Core a little closer to no longer needing to depend on OpenSSL, a dependency that has caused security issues in the past. The new implementation gathers entropy from multiple sources, including from hardware supporting the rdseed CPU instruction.
- On macOS, Groestlcoin Core now opts out of application CPU throttling ("app nap") during initial blockchain download, when catching up from over 100 blocks behind the current chain tip, or when reindexing chain data. This helps prevent these operations from taking an excessively long time because the operating system is attempting to conserve power.
How to Upgrade?
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), then run the installer.
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), run the dmg and drag Groestlcoin Core to Applications.
Other Linux http://groestlcoin.org/forum/index.php?topic=97.0
Download Download the Windows Installer (64 bit) here Download the Windows Installer (32 bit) here Download the Windows binaries (64 bit) here Download the Windows binaries (32 bit) here Download the OSX Installer here Download the OSX binaries here Download the Linux binaries (64 bit) here Download the Linux binaries (32 bit) here Download the ARM Linux binaries (64 bit) here Download the ARM Linux binaries (32 bit) here
ALL NEW - Groestlcoin Moonshine iOS/Android Wallet
Built with React Native, Moonshine utilizes Electrum-GRS's JSON-RPC methods to interact with the Groestlcoin network.
GRS Moonshine's intended use is as a hot wallet. Meaning, your keys are only as safe as the device you install this wallet on. As with any hot wallet, please ensure that you keep only a small, responsible amount of Groestlcoin on it at any given time.
- Groestlcoin Mainnet & Testnet supported
- Bech32 support
- Multiple wallet support
- Electrum - Support for both random and custom peers
- Encrypted storage
- Biometric + Pin authentication
- Custom fee selection
- Import mnemonic phrases via manual entry or scanning
- RBF functionality
- BIP39 Passphrase functionality
- Support for Segwit-compatible & legacy addresses in settings
- Support individual private key sweeping
- UTXO blacklisting - Accessible via the Transaction Detail view, this allows users to blacklist any utxo that they do not wish to include in their list of available utxo's when sending transactions. Blacklisting a utxo excludes its amount from the wallet's total balance.
- Ability to Sign & Verify Messages
- Support BitID for password-free authentication
- Coin Control - This can be accessed from the Send Transaction view and basically allows users to select from a list of available UTXO's to include in their transaction.
- Ability to Broadcast raw transactions
Download iOS Android
ALL NEW! – HODL GRS Android Wallet
HODL GRS connects directly to the Groestlcoin network using SPV mode and doesn't rely on servers that can be hacked or disabled.
HODL GRS utilizes AES hardware encryption, app sandboxing, and the latest security features to protect users from malware, browser security holes, and even physical theft. Private keys are stored only in the secure enclave of the user's phone, inaccessible to anyone other than the user.
Simplicity and ease-of-use is the core design principle of HODL GRS. A simple recovery phrase (which we call a Backup Recovery Key) is all that is needed to restore the user's wallet if they ever lose or replace their device. HODL GRS is deterministic, which means the user's balance and transaction history can be recovered just from the backup recovery key.
- Simplified payment verification for fast mobile performance
- No server to get hacked or go down
- Single backup phrase that works forever
- Private keys never leave your device
- Import password protected paper wallets
- Payment protocol payee identity certification
Download Main Release (Main Net) Testnet Release
ALL NEW! – GroestlcoinSeed Savior
Groestlcoin Seed Savior is a tool for recovering BIP39 seed phrases.
This tool is meant to help users with recovering a slightly incorrect Groestlcoin mnemonic phrase (AKA backup or seed). You can enter an existing BIP39 mnemonic and get derived addresses in various formats.
To find out if one of the suggested addresses is the right one, you can click on the suggested address to check the address' transaction history on a block explorer.
- If a word is wrong, the tool will try to suggest the closest option.
- If a word is missing or unknown, please type "?" instead and the tool will find all relevant options.
Live Version (Not Recommended) https://www.groestlcoin.org/recovery/
ALL NEW! – Vanity Search Vanity Address Generator NOTE: NVidia GPU or any CPU only. AMD graphics cards will not work with this address generator.
VanitySearch is a command-line Segwit-capable vanity Groestlcoin address generator. Add unique flair when you tell people to send Groestlcoin. Alternatively, VanitySearch can be used to generate random addresses offline.
If you're tired of the random, cryptic addresses generated by regular groestlcoin clients, then VanitySearch is the right choice for you to create a more personalized address.
VanitySearch is a groestlcoin address prefix finder. If you want to generate safe private keys, use the -s option to enter your passphrase which will be used for generating a base key as for BIP38 standard (VanitySearch.exe -s "My PassPhrase" FXPref). You can also use VanitySearch.exe -ps "My PassPhrase" which will add a crypto secure seed to your passphrase.
VanitySearch may not compute a good grid size for your GPU, so try different values using -g option in order to get the best performances. If you want to use GPUs and CPUs together, you may have best performances by keeping one CPU core for handling GPU(s)/CPU exchanges (use -t option to set the number of CPU threads).
- Fixed size arithmetic
- Fast Modular Inversion (Delayed Right Shift 62 bits)
- SecpK1 Fast modular multiplication (2 steps folding 512bits to 256bits using 64 bits digits)
- Use some properties of elliptic curve to generate more keys
- SSE Secure Hash Algorithm SHA256 and RIPEMD160 (CPU)
- Multi-GPU support
- CUDA optimisation via inline PTX assembly
- Seed protected by pbkdf2_hmac_sha512 (BIP38)
- Support P2PKH, P2SH and BECH32 addresses
- Support split-key vanity address
ALL NEW! – Groestlcoin EasyVanity 2020
Groestlcoin EasyVanity 2020 is a windows app built from the ground-up and makes it easier than ever before to create your very own bespoke bech32 address(es) when whilst not connected to the internet.
If you're tired of the random, cryptic bech32 addresses generated by regular Groestlcoin clients, then Groestlcoin EasyVanity2020 is the right choice for you to create a more personalised bech32 address. This 2020 version uses the new VanitySearch to generate not only legacy addresses (F prefix) but also Bech32 addresses (grs1 prefix).
- Ability to continue finding keys after first one is found
- Includes warning on start-up if connected to the internet
- Ability to output keys to a text file (And shows button to open that directory)
- Show and hide the private key with a simple toggle switch
- Show full output of commands
- Ability to choose between Processor (CPU) and Graphics Card (GPU) ( NVidia ONLY! )
- Features both a Light and Dark Material Design-Style Themes
- Free software - MIT. Anyone can audit the code.
- Written in C# - The code is short, and easy to review.
Remastered! – Groestlcoin WPF Desktop Wallet (v184.108.40.206)
Groestlcoin WPF is an alternative full node client with optional lightweight 'thin-client' mode based on WPF. Windows Presentation Foundation (WPF) is one of Microsoft's latest approaches to a GUI framework, used with the .NET framework. Its main advantages over the original Groestlcoin client include support for exporting blockchain.dat and including a lite wallet mode.
This wallet was previously deprecated but has been brought back to life with modern standards.
- Works via TOR or SOCKS5 proxy
- Can use bootstrap.dat format as blockchain database
- Import/Export blockchain to/from bootstrap.dat
- Import wallet.dat from Groestlcoin-qt wallet
- Export wallet to wallet.dat
- Use both groestlcoin-wpf and groestlcoin-qt with the same addresses in parallel. When you send money from one program, the transaction will automatically be visible on the other wallet.
- Rescan blockchain with a simple mouse click
- Works as a full node and listens to port 1331 (listening port can be changed)
- Fast Block verifying, parallel processing on multi-core CPUs
- Mine Groestlcoins with your CPU by a simple mouse click
- All private keys are kept encrypted on your local machine (or on a USB stick)
- Lite - Has a lightweight "thin client" mode which does not require a new user to download the entire Groestlcoin chain and store it
- Free and decentralised - Open Source under GNU license
- Bech32 support
- P2sh support
- Fixed Import/Export to wallet.dat
- Testnet Support
- Rescan wallet option
- Change wallet password option
- Address type and Change type options through *.conf file
- Import from bootstrap.dat - It is a flat, binary file containing Groestlcoin blockchain data, from the genesis block through a recent height. All versions automatically validate and import the file "grs.bootstrap.dat" in the GRS directory. Grs.bootstrap.dat is compatible with Qt wallet. GroestlCoin-Qt can load from it.
- In Full mode file %APPDATA%\Groestlcoin-WPF\GRS\GRS.bootstrap.dat is full blockchain in standard bootstrap.dat format and can be used with other clients.
ALL NEW! – BIP39 Key Tool
Groestlcoin BIP39 Key Tool is a GUI interface for generating Groestlcoin public and private keys. It is a standalone tool which can be used offline.
- Selection options for 3-24 words (simply putting the space separated words in the first word box will also work) along with a bip39 passphrase
- User input for total number of addresses desired
- Creation of P2PKH, P2SH, P2WPKH and P2WSH addresses along with xpriv and xpub as per BIP32 spec, using a word list as the starting point following the BIP39 standard.
- Pre-sets for BIP44, BIP49, BIP84 and BIP141 standards, along with custom user input for derivation path
- Option for Hardened or non-hardened addresses
- Option for Testnet private and public keys
- Output containing derivation path, private key in WIF, integer and hex format, public key address, public point on curve and scriptpubkey
- Results are output in a file titled 'wallet.txt' with the time addresses were generated, along with all information presented onscreen
Download Windows Linux
pip3 install -r requirements.txt python3 bip39\_gui.py
ALL NEW! – Electrum Personal Server
Groestlcoin Electrum Personal Server aims to make using Electrum Groestlcoin wallet more secure and more private. It makes it easy to connect your Electrum-GRS wallet to your own full node.
It is an implementation of the Electrum-grs server protocol which fulfils the specific need of using the Electrum-grs wallet backed by a full node, but without the heavyweight server backend, for a single user. It allows the user to benefit from all Groestlcoin Core's resource-saving features like pruning, blocks only and disabled txindex. All Electrum-GRS's feature-richness like hardware wallet integration, multi-signature wallets, offline signing, seed recovery phrases, coin control and so on can still be used, but connected only to the user's own full node.
Full node wallets are important in Groestlcoin because they are a big part of what makes the system be trust-less. No longer do people have to trust a financial institution like a bank or PayPal, they can run software on their own computers. If Groestlcoin is digital gold, then a full node wallet is your own personal goldsmith who checks for you that received payments are genuine.
Full node wallets are also important for privacy. Using Electrum-GRS under default configuration requires it to send (hashes of) all your Groestlcoin addresses to some server. That server can then easily spy on your transactions. Full node wallets like Groestlcoin Electrum Personal Server would download the entire blockchain and scan it for the user's own addresses, and therefore don't reveal to anyone else which Groestlcoin addresses they are interested in.
Groestlcoin Electrum Personal Server can also broadcast transactions through Tor which improves privacy by resisting traffic analysis for broadcasted transactions which can link the IP address of the user to the transaction. If enabled this would happen transparently whenever the user simply clicks "Send" on a transaction in Electrum-grs wallet.
Note: Currently Groestlcoin Electrum Personal Server can only accept one connection at a time.
- Use your own node
- Tor support
- Uses less CPU and RAM than ElectrumX
- Used intermittently rather than needing to be always-on
- Doesn't require an index of every Groestlcoin address ever used like on ElectrumX
Download Windows Linux / OSX
UPDATED – Android Wallet 7.38.1 - Main Net + Test Net
The app allows you to send and receive Groestlcoin on your device using QR codes and URI links.
When using this app, please back up your wallet and email them to yourself! This will save your wallet in a password protected file. Then your coins can be retrieved even if you lose your phone.
- Add confidence messages, helping users to understand the confidence state of their payments.
- Handle edge case when restoring via an external app.
- Count devices with a memory class of 128 MB as low ram.
- Introduce dark mode on Android 10 devices.
- Reduce memory usage of PIN-protected wallets.
- Tapping on the app's version will reveal a checksum of the APK that was installed.
- Fix issue with confirmation of transactions that empty your wallet.
Download Main Net Main Net (FDroid) Test Net
UPDATED – Groestlcoin Sentinel 3.5.06 (Android)
Groestlcoin Sentinel is a great solution for anyone who wants the convenience and utility of a hot wallet for receiving payments directly into their cold storage (or hardware wallets).
Sentinel accepts XPUB's, YPUB'S, ZPUB's and individual Groestlcoin address. Once added you will be able to view balances, view transactions, and (in the case of XPUB's, YPUB's and ZPUB's) deterministically generate addresses for that wallet.
Groestlcoin Sentinel is a fork of Groestlcoin Samourai Wallet with all spending and transaction building code removed.
- Removed Cryptopia
- Added adaptive icons for Android 8 and above
- Add block book block explorer
UPDATED – P2Pool Test Net
- Add compatibility for Groestlcoin Core 2.18.2
Pre-Hosted Testnet P2Pool is available via http://testp2pool.groestlcoin.org:21330/static/
What is a Cryptocurrency Wallet? submitted by
Use this straightforward guide to learn what a cryptocurrency wallet is, how they work and discover which ones are the best on the market.
A cryptocurrency wallet is a software program that stores private and public keys and interacts with various blockchain to enable users to send and receive digital currency and monitor their balance. If you want to use Bitcoin or any other cryptocurrency, you will need to have a digital wallet. How do they work?
Millions of people use cryptocurrency wallets, but there is considerable misunderstanding about how they work. Unlike traditional ‘pocket’ wallets, digital wallets don’t store currency. In fact, currencies don’t get stored in any single location or exist anywhere in any physical form. All that exists are records of transactions stored on the blockchain.
Cryptocurrency wallets are software programs that store your public and private keys and interface with various blockchain so users can monitor their balance, send money and conduct other operations. When a person sends you bitcoins or any other type of digital currency, they are essentially signing off ownership of the coins to your wallet’s address. To be able to spend those coins and unlock the funds, the private key stored in your wallet must match the public address the currency is assigned to. If public and private keys match, the balance in your digital wallet will increase, and the senders will decrease accordingly. There is no actual exchange of real coins. The transaction is signified merely by a transaction record on the blockchain and a change in balance in your cryptocurrency wallet. What are the different types of Cryptocurrencywallets?
There are several types of wallets that provide different ways to store and access your digital currency. Wallets can be broken down into three distinct categories – software, hardware, and paper. Software wallets can be a desktop, mobile or online.
Are Cryptocurrency wallets secure?
- Desktop: wallets are downloaded and installed on a PC or laptop. They are only accessible from the single computer in which they are downloaded. Desktop wallets offer one of the highest levels of security however if your computer is hacked or gets a virus there is the possibility that you may lose all your funds.
- Online: wallets run on the cloud and are accessible from any computing device in any location. While they are more convenient to access, online wallets store your private keys online and are controlled by a third party which makes them more vulnerable to hacking attacks and theft.
- Mobile: wallets run on an app on your phone and are useful because they can be used anywhere including retail stores. Mobile wallets are usually much smaller and simpler than desktop wallets because of the limited space available on a mobile.
- Hardware: wallets differ from software wallets in that they store a user’s private keys on a hardware device like a USB. Although hardware wallets make transactions online, they are stored offline which delivers increased security. Hardware wallets can be compatible with several web interfaces and can support different currencies; it just depends on which one you decide to use. What’s more, making a transaction is easy. Users simply plug in their device to any internet-enabled computer or device, enter a pin, send currency and confirm. Hardware wallets make it possible to easily transact while also keeping your money offline and away from danger.
- Paper: wallets are easy to use and provide a very high level of security. While the term paper wallet can simply refer to a physical copy or printout of your public and private keys, it can also refer to a piece of software that is used to securely generate a pair of keys which are then printed. Using a paper wallet is relatively straightforward. Transferring Bitcoin or any other currency to your paper wallet is accomplished by the transfer of funds from your software wallet to the public address shown on your paper wallet. Alternatively, if you want to withdraw or spend currency, all you need to do is transfer funds from your paper wallet to your software wallet. This process, often referred to as ‘sweeping,’ can either be done manually by entering your private keys or by scanning the QR code on the paper wallet.
Wallets are secure to varying degrees. The level of security depends on the type of wallet you use (desktop, mobile, online, paper, hardware) and the service provider. A web server is an intrinsically riskier environment to keep your currency compared to offline. Online wallets can expose users to possible vulnerabilities in the wallet platform which can be exploited by hackers to steal your funds. Offline wallets, on the other hand, cannot be hacked because they simply aren’t connected to an online network and don’t rely on a third party for security.
Although online wallets have proven the most vulnerable and prone to hacking attacks, diligent security precautions need to be implemented and followed when using any wallet. Remember that no matter which wallet you use, losing your private keys will lead you to lose your money. Similarly, if your wallet gets hacked, or you send money to a scammer, there is no way to reclaim lost currency or reverse the transaction. You must take precautions and be very careful!
- Backup your wallet. Store only small amounts of currency for everyday use online, on your computer or mobile, keeping the vast majority of your funds in a high security environment. Cold or offline storage options for backup like Ledger Nano or paper or USB will protect you against computer failures and allow you to recover your wallet should it be lost or stolen. It will not, however, protect you against eager hackers. The reality is, if you choose to use an online wallet there are inherent risks that can’t always be protected against.
- Update software. Keep your software up to date so that you have the latest security enhancements available. You should regularly update not only your wallet software but also the software on your computer or mobile.
- Add extra security layers. The more layers of security, the better. Setting long and complex passwords and ensuring any withdrawal of funds requires a password is a start. Use wallets that have a good reputation and provide extra security layers like two-factor authentication and additional pin code requirements every time a wallet application gets opened. You may also want to consider a wallet that offers multisig transactions like Armory or Copay. A multisig or multi-signature wallet requires the permission of another user or users before a transaction can be made.
Multi-currency or single use?
is by far the most well-known and popular digital currency, hundreds of newcryptocurrencies
(referred to as altcoins) have emerged, each with distinctive ecosystems and infrastructure. If you’re interested in using a variety of cryptocurrencies, the good news is, you don’t need set up a separate wallet for each currency. Instead of using a cryptocurrency wallet that supports a single currency, it may be more convenient to set up a multi-currency wallet which enables you to use several currencies from the same wallet. Are there any transaction fees?
There is no straightforward answer here.
In general, transaction fees are a tiny fraction of traditional bank fees. Sometimes fees need to be paid for certain types of transactions to network miners as a processing fee, while some transactions don’t have any fee at all. It’s also possible to set your own fee. As a guide, the median transaction size of 226 bytes would result in a fee of 18,080 satoshis or $0.12. In some cases, if you choose to set a low fee, your transaction may get low priority, and you might have to wait hours or even days for the transaction to get confirmed. If you need your transaction completed and confirmed promptly, then you might need to increase the amount you’re willing to pay. Whatever wallet you end up using, transaction fees are not something you should worry about. You will either pay minuscule transaction fees, choose your own fees or pay no fees at all. A definite improvement from the past! Are cryptocurrency wallets anonymous?
Kind of, but not really. Wallets are pseudonymous. While wallets aren’t tied to the actual identity of a user, all transactions are stored publicly and permanently on the blockchain. Your name or personal street address won’t be there, but data like your wallet address could be traced to your identity in a number of ways. While there are efforts underway to make anonymity and privacy easier to achieve, there are obvious downsides to full anonymity. Check out the DarkWallet
project that is looking to beef up privacy and anonymity through stealth addresses and coin mixing. Which Cryptocurrency wallet is the best?
There is an ever-growing list of options. Before picking a wallet, you should, however, consider how you intend to use it.
Bread Wallet Bread Wallet
- Do you need a wallet for everyday purchases or just buying and holding digital currency for an investment?
- Do you plan to use several currencies or one single currency?
- Do you require access to your digital wallet from anywhere or only from home?
- Take some time to assess your requirements and then choose the most suitable wallet for you.
is a simple mobile Bitcoin digital wallet that makes sending bitcoins as easy as sending an email. The wallet can be downloaded from the App Store or Google Play. Bread Wallet offers a standalone client, so there is no server to use when sending or receiving bitcoins. That means users can access their money and are in full control of their funds at all times. Overall, Bread Wallet’s clean interface, lightweight design and commitment to continually improve security, make the application safe, fast and a pleasure to use for both beginners and experienced users alike.
- Pros: Good privacy & security, beginner friendly, simple & clean, open source software, free.
- Cons: No web or desktop interface, lacks features, hot wallet.
Advanced users searching for a Bitcoin mobile digital wallet, should look no further than mycelium. The Mycelium
mobile wallet allows iPhone and Android users to send and receive bitcoins and keep complete control over bitcoins. No third party can freeze or lose your funds! With enterprise-level security superior to most other apps and features like cold storage and encrypted PDF backups, an integrated QR-code scanner, a local trading marketplace and secure chat amongst others, you can understand why Mycelium has long been regarded as one of the best wallets on the market.
- Pros: Good privacy, advanced security, feature-rich, open source software, free
- Cons: No web or desktop interface, hot wallet, not for beginners
is a relatively new and unknown digital wallet that is currently only available on the desktop. It enables the storage and trading of Bitcoin, Ether, Litecoins, Dogecoins and Dash through an incredibly easy to use, intuitive and beautiful interface. Exodus also offers a very simple guide to backup your wallet. One of the great things about Exodus is that it has a built-in shapeshift exchange that allows users to trade altcoins for bitcoins and vice versa without leaving the wallet.
- Pros: Good privacy & security, beginner friendly, intuitive, easy to use, in-wallet trading, supports multiple currencies, open source software, free.
- Cons: Hot wallet, no web interface or mobile app
Created by Bitpay, Copay
is one of the best digital wallets on the market. If you’re looking for convenience, Copay is easily accessed through a user-friendly interface on desktop, mobile or online. One of the best things about Copay is that it’s a multi-signature wallet so friends or business partners can share funds. Overall, Copay has something for everyone. It’s simple enough for entry-level users but has plenty of additional geeky features that will impress more experienced players as well.
- Pros: Good privacy & security, multisig transactions, multiple platforms & devices, multiple wallet storage, beginner friendly, open source software, free
- Cons: Can be slow & unresponsive, limited user support
Jaxx is a multi-currency Ether, Ether Classic, Dash, DAO, Litecoin, REP, Zcash, Rootstock, Bitcoin wallet and user interface. Jaxx has been designed to deliver a smooth Bitcoin and Ethereum experience. It is available on a variety of platforms and devices (Windows, Linux, Chrome, Firefox, OSX, Android mobile & tablet, iOS mobile & tablet) and connects with websites through Firefox and Chrome extensions. Jaxx allows in wallet conversion between Bitcoin, Ether and DAO tokens via Shapeshift and the import of Ethereum paper wallets. With an array of features and the continual integration of new currencies, Jaxx is an excellent choice for those who require a multi-currency wallet.
- Pros: Good privacy & security, Multi-currency, wallet linking across multiple platforms, great user support, feature rich, user-friendly, free.
- Cons: Code is not open source, can be slow to load
is an open source Bitcoin desktop wallet perfect for experienced users that place emphasis on security. Some of Armory’s features include cold storage, multi-signature transactions, one-time printable backups, multiple wallets interface, GPU-resistant wallet encryption, key importing, key sweeping and more. Although Armory takes a little while to understand and use to it’s full potential, it’s a great option for more tech-savvy bitcoiners looking to keep their funds safe and secure.
- Pros: Good privacy, great security features, multi-signature options, solid cold storage options, free.
- Cons: Only accessible via the desktop client, not for beginners.
is a hardware Bitcoin wallet that is ideal for storing large amounts of bitcoins. Trezor cannot be infected by malware and never exposes your private keys which make it as safe as holding traditional paper money. Trezor is open source and transparent, with all technical decisions benefiting from wider community consultation. It’s easy to use, has an intuitive interface and is Windows, OS X and Linux friendly. One of the few downsides of the Trezor wallet is that it must be with you to send bitcoins. This, therefore, makes Trezor best for inactive savers, investors or people who want to keep large amounts of Bitcoin highly secure.
- Pros: Good security & privacy, cold storage, easy to use a web interface, in-built screen, open source software, beginner friendly.
- Cons: Costs $99, must have device to send bitcoins
The Ledger Wallet Nano
is a new hierarchical deterministic multisig hardware wallet for bitcoin users that aims to eliminate a number of attack vectors through the use of a second security layer. This tech-heavy description does not mean much to the average consumer, though, which is why I am going to explain it in plain language, describing what makes the Ledger Wallet Nano tick. In terms of hardware, the Ledger Wallet Nano is a compact USB device based on a smart card. It is roughly the size of a small flash drive, measuring 39 x 13 x 4mm (1.53 x 0.51 x 0.16in) and weighing in at just 5.9g.
- Screen/device protected by metal swivel cover
- Multi-Currency support
- 3rd-Party apps can run from device
- U2F support
- When recovering wallet from seed, the whole process can be done from the device without even connecting it to a computer!
- Fairly inexpensive (~$65 USD)
Green Address Green Address
- Not as advanced wallet software (no transaction labeling)
- No ability to create hidden accounts
- No password manager
is a user-friendly Bitcoin wallet that’s an excellent choice for beginners. Green Address is accessible via desktop, online or mobile with apps available for Chrome, iOS, and Android. Features include multi-signature addresses & two-factor authentications for enhanced security, paper wallet backup, and instant transaction confirmation. A downside is that Green Address is required to approve all payments, so you do not have full control over your spending
Blockchain (dot) info Blockchain
- Pros: Solid security, multi-platform & device, multi-sig, beginner-friendly, open source software, free.
- Cons: Hot wallet, average privacy, the third party must approve payments.
is one of the most popular Bitcoin wallets. Accessing this wallet can be done from any browser or smartphone. Blockchain.info provides two different additional layers. For the browser version, users can enable two-factor authentication, while mobile users can activate a pin code requirement every time the wallet application is opened. Although your wallet will be stored online and all transactions will need to go through the company’s servers, Blockchain.info does not have access to your private keys. Overall, this is a well-established company that is trusted throughout the Bitcoin community and makes for a solid wallet to keep your currency.
- Pros: Good security, easy to use web & mobile interface, well-known & trusted company, beginner friendly, free.
- Cons: Hot wallet, weak privacy, third party trust required, has experienced outages.
Stop attacks before ”zero day” and stop the Advanced Persistent Threat (APT)
We live in a dangerous world — our information technology systems face that danger every single day. Hackers are constantly attempting to infiltrate systems, steal information, damage government and corporate reputations, and take control of systems and processes.
Hackers share and use a variety of tools and techniques to gain access to, and
maintain access to, IT systems, including groups and techniques so dangerous
they have their own category - the Advanced Persistent Threat (APT). At the
center of the APT are sophisticated techniques using malware to exploit vulnerabilities in systems. Traditional cyber security technologies use file signatures to locate these tools and hacker malware, but hackers are now actively camouflaging their tools by changing, customizing, and “morphing” them into new files that do not match any known signatures (‘Polymorphic Malware’). This introduces a massive gap in malicious file detection which leaves the enterprise open to exploitation — and it’s just not possible for traditional signature-based systems to keep up. In fact, signature-based anti-virus and anti-malware systems are only around 25% effective today. BlindSpot™ sees through it all, even as the files morph and change in a futile attempt to remain camouflaged.
Digital File Fingerprints
Any File Type, Any Language, Partial Matches, Exact Matches
BlindSpot™, the adaptive security solution from BlindSpot™, can see through the
Polymorphic camouflage used by the worlds most advanced hackers by utilizing
digital file fingerprints and our proprietary adaptive BlindSpot™ ‘brain’ that constantly analyzes the fingerprints of known malicious files and tools to locate partial matches within the files on your systems - servers, laptops, desktops, USB drives, and even mobile devices. BlindSpot™ can cut right through the Polymorphic files, revealing the true hacking tools underneath, even if they are only fragments or pieces of a more complete set of hacking tools and technologies.
Most cyber attacks happen weeks or even months after their initial penetration and access to a network or system, and even the simplest attacks tend to have a fuse that is typically several days. It takes them time to map out a system, probe for the information they want, and obtain or forge credentials with the type of access they need. But from the moment their tools first land on your network and systems, BlindSpot™ sees them. If fact, BlindSpot™ can see them sitting on a newly inserted USB drive even if the files are not copied to your systems. This means BlindSpot™ can identify and alert you to malicious files and potential illicit activities before the attack happens - before zero day!
How does BlindSpot™ work? BlindSpot™ sits on the endpoint and continuously monitors file activity. Digital fingerprints, which can be used to find partial matches of any file type in any language, are reported back where they are kept forever in a temporal repository.
BlindSpot™ looks through all of the digital fingerprints — both those from files on your systems and those in a constantly updated database of known malicious files and hacking tools, to locate and alert you to any indication of hacking, malicious files, or illicit activity. BlindSpot™ is a disruptive technology that can see polymorphic malware and stop attacks before zero day.
Digital File Fingerprints are created from a file or a piece of digital data/information by using advanced mathematics to look at all of the small pieces of data that make up the file to create a very small, unique piece of mathematical data — a digital file fingerprint. Files may be of any file type and in any language - digital fingerprints can find partial and exact matches regardless of what is in the file itself.
Just like with humans, once a fingerprint has been taken, you no longer need the
person to identify them. The fingerprint is enough. Even a partial fingerprint is
enough, and sometimes a smudge will do. Digital fingerprints work on the same
principle. Once BlindSpot™ has taken a digital fingerprint of a file, the file is no longer needed to identify it or to compare it with other files. And because digital fingerprints are tiny, they are easy to store. Even a multi-gigabyte file has a digital fingerprint that is no larger than 10k bytes.
Once you have two sets of digital fingerprints, you can compare them. Because BlindSpot™ starts with full fingerprints of known malicious files, it can identify matching files even when the digital fingerprint is only partially there. And with BlindSpot™’s advanced processing capabilities, file fragments, recovered data from a hard drive, partially downloaded documents, damaged files (both intentional and accidental) and other incomplete file structures can be properly fingerprinted in a way that still allows matches to be found.
Other technologies and software use static signatures, which do not work if any part of a file, regardless of how small, is different from another, or if the file is damaged in any way. BlindSpot™ and digital fingerprints enable partial matching, and can see through the camouflage that has become the industry standard for hackers across the globe. Static signature based solutions simply cannot do this.
Imagine your favorite detective drama on TV. The prosecutor says “This partial
fingerprint was found at the crime scene and the video camera across the
street recorded a perfect image of the person’s face.” The jury deliberates and
compares the picture and fingerprints of the defendant that were taken the day
before. They conclude, because the fingerprint was not all there and was not 100% identical, and because one picture showed a mustache that looked identical but was one millimeter longer than the other picture, that the two people were not identical - and set the criminal free. Well, that show wouldn’t be on TV long because crime would run rampant. Now imagine they had BlindSpot™. Criminals would be caught, the town would be a much safer place, and the show would be on for years to come.
Now imagine your network and systems without BlindSpot™, where traditional
exact match signature software is on your front line of defense. All kinds of
malicious files could walk right through and sit down on your hard drives, just
waiting for hackers to activate them. But you don’t have to imagine what your
systems would be like with BlindSpot™ — instead, simply contact us, get BlindSpot™ in place, and we’ll work with you to show you what’s really on your systems and help you keep those systems safe.
Ensuring System Compliance
Take the guesswork out of compliance assessment
All Government systems go through Certification and Accreditation. BlindSpot™ can help you with malicious code protection, for both security considerations and required compliance. Guidelines found in NIST 800-53 Revisions 3+ Security Requirements for System Integrity, SI-3 Malicious Code Protection, state that malicious code protection mechanisms must be employed at information system entry and exit points, including workstations, notebook computers, and mobile devices, to detect and eradicate malicious code.
BlindSpot™, with its continuous monitoring of the files on your endpoints and its
continuous updating of its known malicious file repository, will provide the
required real-time and full monthly re-scans of your files, will alert your
administrative staff when malicious code is found, will provide reports on
potential malicious files, illicit activity, and follow-up with very short false positive reports. BlindSpot™’s false positive rate is less than 0.01%. BlindSpot™ helps organizations meet the security requirements set forth and ensure compliance.
Intellectual Property Protection
Track sensitive information as it changes and moves around the enterprise
BlindSpot™ uses digital file fingerprints to identify partial and exact matches between files, regardless of file type or language. This ability can be used to track movements of and changes to files on a network of computers.
Government entities and corporations need to addresses the issue of monitoring
documents and files that contain sensitive information intellectual property, and it
is no longer sufficient to simply store them on a secure server and require specific credentials to access the information. People, both unintentionally and sometimes with malicious intent, copy and paste parts of documents, move files to USB drives, and otherwise edit and transfer files in order to get them on to a laptop, share them with a co-worker, or exfiltrate confidential information to outside networks and systems. BlindSpot™ carefully watches all of the files on your network, including what’s going with USB drives. If someone copies part of a file that has sensitive data to another file, BlindSpot™ sees it. Furthermore, BlindSpot™ can alert you when it sees questionable activity with certain documents/files or with specific computers/individuals.
Your sensitive files now have a watchdog that catches both unintentional and
malicious exposure to non-secure systems. Use BlindSpot™ to set up a custom
database of the locations where your sensitive files are stored, and BlindSpot™ will create a set of digital file fingerprints that can be used to track those files across your network and systems. This ensures that an organization can know where its proprietary and sensitive information is 365/7/24, in real-time.
Supervisory Control and Data Acquisition (SCADA) Systems
Supervisory Control and Data Acquisition (SCADA) is a system for remote monitoring and control that operates with coded signals over communication channels (using typically one communication channel per remote station).
SCADA networks contain computers and applications that perform key functions in providing essential services and commodities (e.g. electricity, natural gas, gasoline, water, waste treatment, transportation) to all Americans. They are part of the nation’s critical infrastructure, provide great efficiency, are widely used, and require protection from a variety of cyber threats.
One of the most significant threats is benign files residing on the computers on
the network that morph into tools that hackers can use to gain access to the
network and the equipment it monitors and/or controls. These files might be part
of the operating system (binary files), might be a normal file that includes
scripting, or can even be a general data file moved onto the computer through a
network or a USB drive. By morphing, these files circumvent detection and
countermeasures. This is just one example of how a hacker can compromise and
exploit the system and the worst part is that you will never know until it is too late!
The recent Department of Justice announcement charging Iranian hackers
believed to be tied to the 2013 hacking of a New York dam illustrates this threat
Enter BlindSpot™’s BlindSpot™ Adaptive Security — BlindSpot™ monitors all files of all types (any format or language) without the requirement of a translator or human operator. BlindSpot™ can see right through the hacker’s camouflage of
morphing files to quickly identify problems and threats before hackers have the
opportunity to active and use their tools. For U.S. and foreign based systems,
BlindSpot™ is a must have cyber security solution.
The BlindSpot™ team has extensive experience with SCADA systems and critical infrastructure. Our BlindSpot™ solution is critical to the overall security framework of such systems as it was designed to find the morphing, malicious files and associated illicit file activity that can lead to compromise of the integrity, confidentiality and/or availability of the system. Threats loom on both the inside and outside, and the dynamic nature of these systems require continuous, temporal monitoring to stop cyber attacks before they happen.
Identify and remove Ransomware before it encrypts your files
Ransomware attacks are on the rise and affect Fortune 500 companies, Federal
organizations, and consumers. This vicious type of attack affects your user’s ability to get their work done and prevents users from accessing files on a device or network by making the device or network unusable, by encrypting the files your users need to access, and/or by stopping certain applications from running (e.g. the web browser). A ransom is then demanded (an electronic payment of currency or bitcoins) with the promise that your data will be unencrypted and accessible again following the payment.
If the ransom payment is made, there is no guarantee that the data will be
unencrypted or returned to a state of integrity and/or availability. Furthermore,
there is also no guarantee that the people behind the ransom will not re-infect
your systems again with a variant of what was initially used. Payment encourages future attacks because they know you cannot detect it and will pay again next time. Surprisingly, there are only a handful of known ransomware files in use today (e.g. Crowti, Fakebsod). Safeguards exist that use static signatures to find exact matches for these known files, but the moment these files morph or are changed in any way they become undetectable by these solutions. BlindSpot™ digs deeper with digital file fingerprints and can find the new files, enabling you to analyze, quarantine, or delete them before they activate. This pro-active approach can be the difference between a system being protected and a system being made completely unavailable with encrypted data being held hostage for a ransom. The image below is an actual Fakebsod notification message.
BlindSpot™ uses digital file fingerprints to detect the ransomware by looking at
both partial and exact matches and can report the problem before it happens.
Ransomeware of the past attacked your personal computer and today’s variant
attacks the servers — BlindSpot™ can detect both.
Case Study: March 2016 - Two more healthcare networks are hit by ransomware targeting servers. Advice from law enforcement — pay the ransom! (They did). File backups are insufficient. Paying ransoms is costly and only encourages repeat attacks.
BlindSpot™ is the most comprehensive solution available to detect and root out
ransomware. Take charge of the situation and put BlindSpot™ to work continuously monitoring your systems.
Get BlindSpot™ Now
Commercial or Government, with multiple contract vehicles available
How Can I Get BlindSpot™?
CYBR develops and sells its adaptive enterprise cyber security software product, BlindSpot™, and provides professional services and support for BlindSpot™ implementations.
BlindSpot™ Adaptive Security is a continuous monitoring enterprise solution that tracks file-based activity on the endpoint using digital file fingerprints, can identify problems and cyber threats before zero day, and can see through morphing, camouflaged (polymorphic) files to make accurate determinations of malicious files and illicit activity.
BlindSpot™ can deployed as a secure cloud application for maximum flexibility, a standalone Enterprise implementation for maximum security, or the two combined in an Enterprise implementation augmented through a secure cloud gateway.
Professional Services and Training
BlindSpot™’s team of cyber security experts have the expertise to support
you by creating a holistic, enterprise security framework that consists of people,
policy, procedures and technology that will ensure a security posture that implements the best risk management strategies, tactics and operations available.
Email us at [[email protected]
) for more information.
BlindSpot Solution Brief
June 29, 2018
POC: Shawn R. Key CEO, President
Executive Summary and Estimated Pricing
CYBR’s BlindSpot is an enterprise cyber security solution that pro-actively identifies unknown and known malicious files and circumventive activity on endpoint devices. It is designed to interact with the CYBR Ecosystem and associated Web Portal. Distributed clients serve as the connection to the various BlindSpot server tiers.
BlindSpot identifies Illicit File Activity (IFA) and associated hacker activity via perceptive, industry standard algorithms. BlindSpot identifies exact AND similar files regardless of file type and/or language. This applies to ALL file types (e.g. documents, images, audio and video, carrier, etc.). Currently implemented safeguards and counter measures (such as anti-virus (AV), content filters and malware analysis tools) cannot address polymorphic/adaptive files and emerging threats. This introduces a massive gap in illicit file detection and leaves the enterprise open to exploitation. BlindSpot fills that void.
Additionally, corporations and government entities have a need to address known files and associated activity with regards to content and data management. The uncertainty of Intellectual Property (IP) location and propagation poses significant risk to the organization. The ability to identify the life cycle of a file (origin, source, destination, attributes and proliferation) ensures an organization knows where its proprietary, sensitive and privacy information is 365/24/7, in near real-time.
BlindSpot, is significantly different from solutions in the emerging Specialized Threat Assessment and Protection (STAP) marketplace, as it scales to meet the needs of enterprise organizations and the commercial marketplace. BlindSpot’s proprietary database consists of millions of unique, digital identifiers (hash values) that identify exact AND similar, modified files. This ensures that files existing in their original state or those which have been intentionally modified, do not circumvent detection. Our algorithms ensure near zero false positive return rates. The combinatory effect and the rare expertise of our executives and development thwarts potential competition as BlindSpot is an enterprise solution; not a tool.
The enterprise solution is provide as a license per IP address with associated appliance and/or server hardware requirements.
CYBR BlindSpot Technical Deep Dive
CYBR’s BlindSpot product is currently available as a Software as a Service) (SaaS) deployment blockchain solution and will be available as a full enterprise-install by Q2 2019. In both implementations, end-point agent software monitors the hard drive(s) of a computer or server, analyses any files that change, and reports [multiple] file hashes back to the main system. This enables the main system to effectively monitor which files could be malicious or represent intellectual property on the computers and servers within the customer’s network. By using fuzzy hashing algorithms, the system can detect polymorphic malware and intellectual property that has been partially hidden or obfuscated.
End-point (client) agent: native to each major OS as a fat client. Currently we have end-point agents for Microsoft Windows-based systems using MS .NET c# 2.0/4.5 and C++, although the c# portion will be replaced with all c++ code to increase scalability, efficiency, and security, in Q1 2016. End-point agents for Mac OS (written in Objective-C) and popular Linux platforms (written in c++) will ship in Q1/Q2 2016. Development work on the CentOS linux agent will begin in December 2015.
The Control Application enables system administrators to configure each end-point agent, the system itself, and to actively monitor and access reports on files that have been identified by the system as problematic or of interest. At this time the Control Application is able to provide configuration and monitoring services but is not yet ready for customer on-site deployment and is therefore only available in a SaaS model.
The middle-tier of the system, the Portal sever, currently runs in MS .NET and is written in c#. This tier will be upgraded to a full c++ implementation to increase scalability, efficiency, and security, in Q1 2016, and will run as a standard web server extension on a Linux platform (CentOS/Apache).
The data-tier of the system currently is running in MS SQL Server 2008/2012 and uses transact-SQL tables, but does not use any stored procedures or transactions. Although this tier is sufficient for scalability through mid to late 2016, a no-SQL version of the data tier will be developed in 2016.
The Crush server (hashing services) currently runs on MS Server 2008/2012, is written in c#/c++ and is a) being ported to run as a (c++) daemon on a standard Linux (CentOS) server, and b) being re-engineered to function as a massively parallel application (c/c++) running on NVIDIA Tesla GPU accelerated systems. The Crush server communicates with the data-tier directly and the C2 server indirectly. Multiple Crush servers can run simultaneously and are horizontally scalable and fault-tolerant.
The C2 (Command and Control) server, written in c# and being moved to c++, communicates with the data-tier directly and the Crush server and Control Application indirectly to provide scheduling, system health and integrity, and prioritization services, as well redirecting jobs to maintain fault tolerance of the back-end server components. Multiple C2 servers can run simultaneously and are horizontally scalable.
Hardware and Network:
The basic architecture of the system has two different stacks of software. First, a typical 3-tier approach isolates data storage from end-point and Control Application access with a middle-man protocol altering Portal server. In the SaaS model, the end-point and Control Application software reside on-site with the customer, and the remaining stack components reside at the SaaS hosting datacenter. The second stack consists of multiple horizontally-scalable server components that run entirely in the backend as daemons and interact primarily through the data area to provide the services that are being marketed and sold to the customers. The two stacks are kept somewhat separate from each other in order to buffer one against the other in times of extreme load and for enhanced security.
Following is a description of each software module in the system and how it relates to the others:
The system has one component for data collection (the end-point agent software, which resides on the desktop computers and servers within a deployed customer site), one component for system administration (the Control Application, which resides on a desktop computer that the customer has access to or that an analyst can access through the SaaS system), and a collection of software processes/daemons and a data storage area that comprise the back-end.
The end-point agent collects data from the end-point computer, passes it to the Portal server, which in turn stores it in the data area.
The C2 server monitors the in-flow of data from the end-points, and tasks the Crush server(s) to analyze the data and compare it to databases of known good, known bad, and watch list files, in an efficient manner.
The C2 server also provides notification to the customer of any problematic or watch-list files following the completion of the Crush server tasks.
The Crush server monitors the data area, and performs batch or real-time processing of data as instructed to by the C2 server.
CYBR’s BlindSpot software is a commercially available product that combines a small footprint end-point agent with a centralized monitoring and management system to track files and file changes on the end-point using partial-match digital fingerprints rather than rigid full-match-only file signatures. As files and data buffers are created, edited/altered, and moved either through the network or via removable media devices including USB drives, the product uses its unique and proprietary technologies in combination with industry standard technologies to identify and locate both known malware and unknown [polymorphic] malware on end-points that are continuously monitored by the product. Staff is notified, depending on the urgency or type of digital fingerprint identified, through integrations with 3rd party SIEM solutions, email/SMS transmissions, and reports that are available using the central management system. A false positive rate of partial digital fingerprint matching of ~1 in 10-12 means staff will not be bombarded with unnecessary alerts, maintaining staff efficiency.
Overview: Traditional anti-malware products use static file signatures to locate known malware but have no means of detecting unknown malware, CYBR’s product uses digital file fingerprints that can identify both partial file matches as well as full file signature matches and in doing so can locate and identify both known and unknown malware within the deployed enterprise. A combination of industry standard and publicly available algorithms and CYBR’s own proprietary algorithms, trade secrets, methods, optimizations, and intellectual property for which a patent is currently pending (which is owned solely by CYBR) are combined to form a comprehensive anti-malware platform and continuous end-point monitoring product that is completely unique in the marketplace. Through the use of our proprietary algorithms and optimizations, the product has the ability to scale to the enterprise level and can track desktops/servers as well as mobile/phone/tablet/Internet of Things (IoTs) devices.
Project Implementation: The implementation of this product would include both the commercially available BlindSpot product as well as prototypes of integration packages to connect with the on-site Security Information and Event Management (SIEM) and other systems and prototypes of end-point agents running on operating systems that are not yet available in the currently available version of the product. Both the integration and end-point agent prototypes would be based on existing modular code/functionality and would extend functionality past the currently available modules to ensure the full needs and requirements of the project are met. A full version of BlindSpot would be deployed on servers at/on the enterprise site, and prototypes of both SIEM integrations and new end-point agents would be deployed to augment the full production system. Information flow between all areas of the full system and prototypes would be tested and verified with increasing scale to ensure the level of performance required is available prior to the completion of the project.
End-point Agents: Each end-point is installed with native low-profile proprietary agent software that minimizes both its file system footprint and CPU use. The current product has a native end-point available for Microsoft Windows OSs (both desktops/tablets and servers) in production, and has native end-point agents in development/prototype stage for iOS, Android, MacOS, and RHEL/CentOS, with additional popular Linux derivatives to follow. The main job of the end-point agent is to communicate with the OS and monitor the file system for any changes in files that occur. When changes are detected, a digital file fingerprint of the file is taken and reported to the centralized data store, or cached until a later time if the centralized data store is unreachable (e,g, no cell coverage, laptop not connected to internet). The agent normally runs in “stealth-mode” and uses minimal CPU, RAM, and file system footprint so as not to disrupt the end-user’s workflow or impact system performance. Taking a digital fingerprint of a file and reporting it is very fast and thus the main job of the end-point agent is not system resource intensive. The “heavy lifting” is done on the back-end and does not burden the users or the end-point devices. Configuration of each end-point agent is conducted through the centralized management system, and changes in configuration are transmitted to the end-point agent within a few seconds (provided there is network connectivity).
Central Data Store: A collection of databases on the back end store file watch lists, known good and known bad digital file fingerprints (whitelists and blacklists containing digital file fingerprints of known malware), priority lists and configurations, end-point configurations, last-seen lists, and the full temporal accounting of all digital file fingerprints reported by end-point agents. As new threats are identified they are added to the central data store. As files on end-points change or are edited, their new digital fingerprints are added to the central data store as well. As new threats are identified though polymorphic partial matching, they are added to the known bad list as well.
Scale, System Throughput, and Priority: A single Crush server can serve a small enterprise (100s or 1,000s of end-points), and a horizontally scalable array of Crush servers can be used to provide identification of malware for large enterprises. Similarly, databases in the central data store can be split and maintained/mirrored on several servers or run in a monolithic configuration. This makes the system highly scalable and able to be adapted to enterprises of varying sizes/scales while maintaining a good price/performance ratio. Priority lists can be designated for Crush servers such that high-priority end-points and/or high-priority malware fingerprints can be compared and identified in real-time, and similarly, low-priority lists (e.g. malware fingerprints that have not been seen in months or years) can be run in the evenings or when the system is running below normal load to ensure both immediate analysis of high-priority threats and comprehensive analysis of low-priority threats.
Integration: Several modular integration points within the product enable the straight-forward integration with 3rd party SIEM software and other reporting/management tools and systems. Distinct “notification channels” within the product are used based on the type of threat detected, the priority level of the specific threat detected, the confidence of the match (low percentage match of digital fingerprint vs high), and the location of the match (specific end-point list). Each notification channel has integration points that can be linked in with 3rd party systems so that staff are notified using software and procedures they are already familiar with and trained on (i.e., through a SIEM solution that is already begin monitored by dedicated, trained staff). Prototypes of each specific integration would need to be developed as a part of this project to match/communicate with the exact SIEM (or other) system that is in use at the deployment site in the mannemethod desired. Such a prototype would be developed for the purpose of evaluating the technical interconnectivity between systems to meet the requirements of the deployment, and following the prototype testing period, would be load-tested and stress-tested to ensure it’s performance meets the demands of a highly scalable environment, leading to a mature integration over a period of 3-6 months following the initial prototype period of 1-3 months.
Technology Section Summary: With end-points being continuously monitored by the product, both known and unknown malware threats delivered by the network and removable media will be detected and reported through SIEM system integration and direct email/SMS messages with minimal impact to the end-point (on all major OSs, including desktop and mobile). Centralized management and temporal monitoring of digital fingerprints enables the system to proactively locate and identify malware threats before zero day as well as enabling the staff to conduct their own investigations of systems either in the present or the past for forensic investigations. This makes CYBR’s BlindSpot a complete product that reaches all of the end-point devices to ensure safety and security from all types of malware threats.
The blockchain’s cyber security posture will be greatly enhanced by BlindSpot. CYBR’s executive team works with various military and federal organizations and has a deep understanding of the cyber security challenges that face the enterprise today including advanced persistent threat (APT), polymorphic and pleomorphic malware, zero day attacks and the need to locate white and black files in real time. These threats have now permeated to the blockchain and must be secured.
Company and Customers
The proposed team includes CYBR, Inc. executive management and staff. The company is a works closely with its sister company, 21st Century Technologies, Inc. (21CT), which is a HUBZone certified, Small Business entity. 21CT serves as a value added reseller (VAR) for CYBR, Inc. and is currently a teammate on the DOMino classified DHS contract as a subcontractor to Raytheon.
Existing, paying customers include Stratford University, Test Pros and Devitas. The company also has integrator and VAR partner relationships with Anomali (formerly Threatstream), Lockheed Martin (Cyber and Space) and various commercial entities, which the company believes will become paying customers in 2019.
Transition and Commercialization
Our technology is a commercially available product and commercial sales have been made. The company is actively working to scale this solution to hundreds of thousands of users, which the company has deemed do-able and is in the process of horizontally scaling.
Data Rights Assertions
CYBR, Inc. currently holds a provisional patent and incorporates other trade secrets into the solution. No unreasonable restrictions (including ITAR) are placed upon the use of this intellectual property with regards to global sales.
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