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.
Click Next." "Your Electrum Bitcoin wallet is now available!"

Electrum uses the guide Qtum Electrum.
The electrum and Electrum-LTC versions below 3.3.3 are vulnerable to phishing attacks in which a malicious server displays a message asking the user to download the fake Electrum. To prevent user exposure, versions older than 3.3 can no longer connect to public servers and must be upgraded. Do not download software updates from sources other than electrum.org and electrum-ltc.org.
According to Bleeping Computer, the Bitcoin wallet app Electrom was on GitHub on May 9th, accusing a phishing product called Electrum Pro of stealing a user's seed key and registering a domain name called electrum without Electrum's permission. The Electrum team noted that there was a piece of code indicating that the counterfeit product might have taken the user's seed key and uploaded it to the electrum. Affected users should transfer funds from Bitcoin URLs managed by Eletrum Pro.
Electrum-LTC is Electrum's community maintenance port, Litecoin's Bitcoin wallet. It is not the official product of Electrum Technologies GmbH, and it is not supported.
and open the web page, then your wallet may have been compromised. Particularly paranoid people may want to send all BTCs from their old Electrum wallets to the newly generated Electrum wallet.
In this demo, Electrum developer Chris Belcher shows how to set up and use an Electrum personal server.
Electrum 0.18.8 is available for details at github.
and Android system. Installing Electrum requires you to write down a 12-word seed to help you recover your wallet on multiple devices. If you forget your private key, this seed can also make Electrum look more human. In addition, Electrum has a "cold storage" mode where you don't have to pay Bitcoin to view your balance.

electrum 2.8.1
It's important to transfer the BTC from your original Electrum wallet (to a new Electrum wallet, a new wallet generated by a new monemone, and back it up), which is important to prevent possible BTC loss.
After completing the 2.0 upgrade, copy the following address to download the 2.8.1 version of the upgrade package in your browser.
Wallet, Coldlar, Electrum, Huobi.
Electrum - Lightweight Bitcoin client.