BTC wallet app Electrum was attacked and users lost millions of dollars.
Number of coins issued - lost coins.
Electrum wallets have been hacked in recent days and nearly 250 bitcoins have been stolen, according to blockchain security team Devi Security Labs. This attack, confirmed by Electrum, involves creating a fake version of the wallet to trick users into providing password information. Electrum responded on Twitter that "this is an ongoing phishing attack on Electrum users and advised users to download wallet apps from the official website." Mars Finance reminds users not to install electrum wallets from unknown sources.
The attacker set up a large number of malicious servers. Once a user's Electrum wallet is connected to these servers, they see what appears to be an official message when they send a Bitcoin transaction, telling them to upgrade the Electrum wallet, which actually contains a fraudulent URL.
Since the end of December, users of Bitcoin wallet Electrum have lost 771 BTCs (worth about $4 million) in a series of targeted phishing attacks. Fraudsters can trick users into downloading malicious versions of their wallets by exploiting the software's weaknesses, according to research published by Malwarebytes Labs.
This isn't the first time electrum has appeared in a fake version. In December, nearly $1 million of BTC was stolen when hackers developed a fake encrypted wallet, Electrum. 1 this year.
According to Johnwick.io, we will continue to monitor and track the further flow of funds after a recent user submitted a coin-losing incident claiming that the download used an Electrum wallet had been phishing and that more than 700 bitcoins had been lost, and that the stolen address had been added to the Devi AML system. It is reported that malicious websites (electrumsecure) fake Electrum website phishing attacks, to guide users to download and use the wallet, in order to steal the user's private key and other sensitive data. Devi Security Labs is here to remind users not to install unknown sources of Electrum wallets, to avoid asset losses. Electrum Official Website: electrum.org Electrum Phishing Website: electrumsecure.
lost coins when updating electrum
Use address.transfer() or address.send() when sending funds before updating the contract balance
In response to an earlier April 9 news that Bitcoin Wallet Electrum had been attacked by the botnet DoS, Devi Security Lab analysis said hackers used botnets of more than 140,000 computers to attack Electrom's nodes and simultaneously deploy 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. Millions of dollars of digital currency have been stolen, according to Electrum officials.
So far, electrum users have stolen millions of dollars, and some users have lost nearly $140,000 alone, according to security sources. The attack began about a week ago, and the latest attack has escalated.
The $29.6 million LTC transferred to electrum Wallet, the second-largest account on the rich list, lost $4 million in BTC during the year.
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.
Hackers have launched a denial-of-service (DoS) attack on a well-known wallet Electrum server, according to Johnwick.io. 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. Millions of dollars of digital currency have been stolen, according to Electrum officials. Devi Security Labs recommends that users of Electrum Wallet update to the latest version of the client via the official website and never use the link in the prompt message.
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The next significant development was in October 2017, when the Komodo platform designed a way to trade atomically with the Electrum wallet server. Traders can perform atomic swaps without downloading the entire blockchain of coins they want to exchange. This is often referred to as SPV mode or "light" mode trading.