Lesson 1: Third-party Electrum servers can link your two transactions together. This can be avoided by running your own Electrum server, supported by your own full node.
Electrum tweeted today about the incident, saying it was "a persistent phishing attack on Electrum users" and imploring users to check the effectiveness of the resources they log on to.
The Healthy Security Lab is concerned that Nearly 250 bitcoins have been stolen in a recent hacking attack on an Electrum wallet. 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" and that The Healthy Security Lab advised users not to install an unknown source of Electrum wallets to avoid being tricked.
In August-September, Bitcoin wallet Electrum was hacked twice, and according to multiple sources, at least 1,450 BTCs worth $11.6 million were stolen from phishing attacks that faked Electrum upgrade tips.
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By using the Electrum wallet on its tail, it protects Bitcoin users from anonymity when trading through their wallets, as it is an operating system designed to protect internet privacy.
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.
It's not hard to run your own Electrum server and point your wallet to just use it. This restores Electrum to the point where it has the same privacy and security attributes as the full node, where no one else can see the address or transaction that the wallet is interested in. Electrum then becomes an all-node wallet.
Dash releases Dash Electrum 126.96.36.199 version
Note: Electrum-XZC is derived from Electrum and uses different seed phrase criteria, so it cannot be imported.
Electrum personal server
In recent days, hackers or hacker groups have stolen more than 200 bitcoins worth about $750,000 by attacking the infrastructure of electrum Bitcoin wallets. The attacker is targeting Electrum.