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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.

Satoshi Nakamoto (bitcointalk)

Qtum Electrum Tutorial Qtum Electrum Light Wallet.

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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Wallet developer Electrum took action to fix the vulnerability, which led to the exposure of thousands of Bitcoin wallets.

Wallets accepted by BCC: Electron Cash, Bitcoin Wallet, BTC Wallet, Coinomi, Ledger Wallet, Trezor Wallet, Bitcoin ABC, Bitcoinclassic, Bitcoin unlimitedr, BitGo, Breadwallet, Keepkey, Blockchain.info, Webmoney, Jaxx. Electron Cash offers Android, Free Wallet and BTC, and Bitcoin IOS.

Electrum is a world-renowned Bitcoin light wallet with a long history of multi-signature support and a very broad user base, many of which like to use Electrum as a cold wallet or multi-sign wallet for Bitcoin or even USDT (Omni). Based on this usage scenario, Electrum is used less frequently on the user's computer. The current version of Electrum is 3.3.8, and previous versions of 3.3.4 are known to have "message defects" that allow an attacker to send an "update prompt" through a malicious ElectrumX server. This "update tip" is very confusing to the user, and if you follow the prompt to download the so-called new version of Electrum, you may be tricked. According to user feedback, because of this attack, stolen bitcoins are in the four digits or more. This captured currency theft attack is not stealing the private key (electrum's private key is generally stored with two-factor encryption), but replaces the transfer destination address when the user initiates the transfer. Here we remind users that when transferring money, special attention needs to be paid to whether the destination address has been replaced, which is a very popular method of currency theft recently. It is also recommended that users use hardware wallets such as Ledger, and if you pair it with Electrum, although the private key does not have any security issues, you should also be alert to the replacement of the destination address.

Coinbase: The issue of user coinbase due to incompatibility with SegWit has been resolved.

Cold wallet is opposite to hot wallet, online wallet is hot wallet, there is a risk of cyber-hacking. Instead, offline wallets are cold wallets that cyber-hackers can't attack.

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Slow Fog: Technical analysis of pseudo-Electrum spear phishing attacks against exchange users.