Bitcoin Wallet Electrum Wallet was hacked and lost 1,450 BTCs.

B: Electrum server can customize messages to appear in the user's electrum light wallet software, giving hackers a chance to broadcast phishing messages.

However, after electrum officials said in early 19th that some security mechanisms should be put in place to prevent this "update phishing", many users of Electrum are still in the old version.

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 it was an ongoing phishing attack on Electrum users and advised them to download wallets from the official website.

Your Electrum wallet uses a third-party server that can see all your Bitcoin addresses and transactions. And when you connect to it through Tor, the server doesn't know your real IP address. Since you only use one Bitcoin address once and never use it again, the server cannot link it to any other address group. When you spend the entire balance, there is no zero address where the information can be disclosed. Even with third-party servers, this setting can actually create a lot of privacy.

Fake: github/electrum-wallet/electrum/releases.

A new repo qtum-electrum-new has been built to add qtum-related features to the latest code for Bitcoin electrum.

If someone's Electrum wallet connects to one of these servers and tries to send a BTC transaction, they see an official message telling them to update their Electrum wallet, as well as a scam URL.

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Lightning support in Electrum has been around for a long time. Thomas Voegtlin, the founder of Electrum, first told CoinDesk last summer that Lightning would take it to the next version.