All About Lightning Electrum
As soon as I logged into my wallet, I was asked to provide a two-factor authentication code, which I found a little strange, and usually Electrum only needs it when sending transactions.
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.
Trezor Hardware Wallet - Passphrase Advanced Hidden Features introduction (please use with caution)
On December 27, Reddit user u/normal_rc reported that Electrum's wallet had been hacked and that nearly 250 bitcoins (243.6 BTCs, nearly $1 million) had been maliciously stolen, coinelegraph reported. Electrum then confirmed that the attack included creating a fake version of the wallet to trick users into providing password information. Electrum responded on Twitter that "this is a persistent phishing attack on Electrum users" and warned users not to download Electrum from any source other than the official website.
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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.