April 9 (Johnwick.io) reported that hackers had launched a denial-of-service (DoS) attack on the well-known wallet Electrum server. Hackers used a botnet of more than 140,000 computers to attack Electrum's nodes and simultaneously deployed malicious nodes. When a user connects to these malicious nodes and sends a transaction using an older version of Electrum, the user is prompted to update the Backdoor Client. If the user installs the client as prompted, the private key is stolen and all digital assets are lost.
This "update prompt" is not an official act of Electrum, but a phishing attack by an attacker that exploits a message flaw on the Electrum client and the ElectrumX server, which requires the attacker to deploy the malicious ElectrumX server in advance, and the malicious server is localized by the user's Electrum client (because the Electrum client is a light wallet and the user needs the ElectrumX server to broadcast the transaction). At the time of the madness, malicious ElectrumX servers accounted for as much as 71% of the total, and the show did not fully count that hundreds of bitcoins had been stolen in this phishing attack over the past year or so.
The fact that not many people know is that Esplora is bundled with a based and optimized Electrum server. This Electrum server is derived from Electrs and is now maintained separately by the Blockstream engineering team. Over the past two years, Esplora has become one of the fastest and most scalable Electrum server solutions available for Bitcoin due to continuous updates and performance optimization. Esplora is also the only Electrum server that supports liquid networks.
The next layer is the P2P network layer, which P2P knows is particularly useful for fast broadcasting. Than the original chain on the basis of the main implementation of several functions, nodes found that block synchronization, transaction synchronization, fast broadcasting, fast broadcasting mainly for mining so that transactions can be reached as soon as possible across the network.
Bitcoin Wallet Electrum confirms a phishing attack against its users, reminding them not to download Electrum Wallet software from any channel other than the official website. Earlier media reports said Electrum users had maliciously stolen millions of dollars worth of cryptocurrencies. Hackers create Electrum wallet software with malicious code, induce users to download, and trick users into providing login information such as passwords to commit theft.
MimbleWimble has improved some of these concepts for privacy. First, MW hides the transaction amount by changing how the transaction is created and structured. In Bitcoin, the user creates a transaction by determining the recipient's address and transaction amount, signing the transaction and broadcasting it to the entire network. In MW, in order to hide the number of transactions, the sender and receiver must work together to develop the transaction before broadcasting the information to the network.
Wallet Qtum Electrum
If you want a transaction to be packaged, you need to broadcast your transaction to a network of repeaters, unlike the current process of broadcasting a transaction to a node that operates a memory pool. These repeaters
Lightweight Bitcoin Wallet Electrum announced that the next version will support Lightning network payments, implemented with Python, an electrum network node where wallet users do not need to run Lightning network nodes themselves to make payments, and electrum's Lightning network nodes have now been merged into the Electrum master branch.
Click to get the Electrum Personal Server source code and the Electrum Wallet source code.
Electrum Wallet Bitcoin.
According to Bleeping Computer, the Bitcoin wallet app Electrom was on GitHub on May 9th, accusing a phishing product called Electrum Pro of stealing a user's seed key and registering a domain name called electrum without Electrum's permission. The Electrum team noted that there was a piece of code indicating that the counterfeit product might have taken the user's seed key and uploaded it to the electrum. Affected users should transfer funds from Bitcoin URLs managed by Eletrum Pro.
A clone site masquerading as an Electrum SV wallet has emerged. The cloning site has nothing to do with electrum SV and is designed to steal tokens and create chaos in the BSV community.
When Electrum wallets are synchronized with malicious servers, they are instructed to "update" clients provided by hackers, resulting in the loss of assets contained in older versions. Previously, in December 2018, Electrum.
Broadcast (broadcast) defaults to true. If broadcast is false, the transaction is created and signed and then printed on the screen in hens instead of broadcasting to the network.
Electrum-LTC is a simple but powerful Litecoin wallet. Like its predecessor, the Electrum-Bitcoin wallet, the open source wallet is available on GitHub and anyone can view or upgrade the code.
A new repo qtum-electrum-new has been built to add qtum-related features to the latest code for Bitcoin electrum.
electrum broadcasting transaction
The whole Bitcoin transaction is a big bill, UTXO. What you transfer out is actually the process of signing and encrypting the transaction information with the private key, and then broadcasting (sending) the whole network.
As of press time, phishing attacks that forged Electrum upgrade notifications have stolen at least 1,450 BTC (the number stolen is officially counted by a user, anti-malware companies Malwarebytes and Electrum), with a total value of approximately $11.6 million. It is worth mentioning that Electrum versions lower than 3.3.4 are vulnerable to such phishing attacks. Users who use Electrum wallets should update to the latest version Electrum 3.3.8 through the official website (electrum.org). At present, v4.0.0 has not been officially released. Version, please do not use the link in the prompt message to update, so as to avoid loss of assets
Original title: Slow Fog: Analysis of Pseudo Electrum Harpoon Fishing Attacks
Electrum third party.
I have 5 plus unconfirmed deals and have been waiting for three days. This is ridiculous. And I've set a 140% dynamic transaction fee for electrum.
Digital wallet developer Electrum has released an emergency patch saying it found a vulnerability that could lead any website hosting Electrum to steal a user's digital currency, exposing passwords to the JOHNSONRPC interface and ingelling hackers full control of the wallet. Earlier, Electrum released the first patch, but it didn't seem to solve the problem, and they released a second update urgently Sunday night local time.
and Android system. Installing Electrum requires you to write down a 12-word seed to help you recover your wallet on multiple devices. If you forget your private key, this seed can also make Electrum look more human. In addition, Electrum has a "cold storage" mode where you don't have to pay Bitcoin to view your balance.
Another upgrade under study is the release of a new version of the Electrum-LTC desktop wallet. Electrum-LTC is an SPV wallet that can be used in Windows, Linux, and OS X operating systems.
When an Electrum wallet queries a third-party Electrum server, the server can link two transactions together and know which address is a zero address.