electrum performance, Electrum -Flute Performance- by HaryuDanto on DeviantArt

By default, electrum wallets are randomly connected to a set of Electrum servers. From a privacy perspective, this is not a good thing because it discloses your wallet address and balance to unknown third parties. And unfortunately, many public Electrum servers are run by individuals or groups of blockchain analytics companies or worse. Therefore, if you are using an Electrum wallet, it is generally recommended that you run your own Electrum server and then connect the wallet to that server.

Digital Wallet Electrum was hacked, losing 250 bitcoins.

In addition, small partners who have used Electrum wallets should be aware that with Thecret phrase generated by Electrum, we can recover bitcoin keys on any browser using the Bitcoin Wallet web tool. And Electrum is so secure that there is no evidence that the distributed attack prevention system designed by Dark Wallet will be due to Electrum.

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.

Bitcoin wallet Electrum now supports Lightning online payments, according to Coindesk on July 11. It has previously been reported that Bitcoin Wallet Electrum has released a beta version of Electrum 4.0, adding support for the Bitcoin Lightning Network.

DeViable Security Labs hereby suggests that versions of Electrum below 3.3.4 are vulnerable to such phishing attacks, and users using Electrum Wallet are requested to update to the latest version of Electrum 3.3.8 via the official website (electrum.org), which has not yet been officially released, and do not use the link in the prompt to avoid asset losses.

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.

Electrum and MyEtherWalle users face phishing attacks.

Litecoin Independent Wallet electrum.

Litecoin Independent Wallet electrum.

Bitcoin Wallet Electrum will support the Lightning network in the next release, and its Lightning nodes have been merged into electrum's main branch, according to Cointegraph. Electrum also confirmed that the wallet will be written in-house development Python.

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

As of press time, phishing attacks that forged Electrum upgrade notifications have stolen at least 1,450 BTC (the number stolen is officially counted by a user, anti-malware companies Malwarebytes and Electrum), with a total value of approximately $11.6 million. It is worth mentioning that Electrum versions lower than 3.3.4 are vulnerable to such phishing attacks. Users who use Electrum wallets should update to the latest version Electrum 3.3.8 through the official website (electrum.org). At present, v4.0.0 has not been officially released. Version, please do not use the link in the prompt message to update, so as to avoid loss of assets

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.

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.

When Electrum wallets are synchronized with malicious servers, they are instructed to "update" clients provided by hackers, resulting in the loss of assets contained in older versions. Previously, in December 2018, Electrum.

Electrum is a popular software wallet that works by connecting to a dedicated server. These servers receive a hash of the Bitcoin address in the wallet and reply with transaction information. Electrum wallets are fast and have few resources, but by default, it connects to these servers and can easily monitor users. In addition to Electrum, some other software uses public Electrum servers. By 2019, it is a faster and better alternative to BIP37.

Electrum LTC wallet.

Electrum LTC wallet.

To use mnomets to transfer addresses from electrum wallets to web wallets, you need to set Electrum to be compatible with Qtum phone mnomets in the initial installation (and then use phone wallet mnomets to restore phone wallets on Electrum). This setting is screenshot of the Electrum configuration.

Blockchain.info, Electrum Wallet.

Electrum personal server.

Electrum personal server.

Now that we understand the benefits of Electrum, we can start using Electrum. Before use, prepare pens and paper to facilitate the recording of safety seeds.

In this demo, Electrum developer Chris Belcher shows how to set up and use an Electrum personal server.