Electrum used to be a development team that was responsible for driving early Sandworm activities, but in the CrashOverride event, it also held development and operational roles. According to the data, electrum caused a major power outage in Ukraine in 2016 with the ICS malware CrashOverride, however, because Electrum is also described as an organization that "can develop malware and ICS protocols that can modify the processes of electrical devices", the organization does not rely on exploiting vulnerabilities or zero-day vulnerabilities, but exploits common exploits and methods to launch attacks. For example, the organization used Microsoft's database server as a gateway to commercial and industrial control networks, successfully breaking industrial control systems and using stolen credentials to execute code. As a result, Dragos believes that Electrum is one of the most capable and complex threat groups in the ICS industry today, and in its report, it highlights that "North American power companies should view Electrum as a serious threat." "

Users of Bitcoin wallet Electrum are facing a phishing attack, according to the Dev Security Lab. Hackers broadcast messages to the Electrum client through a malicious server, prompting the user to update to v4.0.0, and if the user follows the prompt to install this "backdoor-carrying client", the private key is stolen and all digital assets are stolen. At the time of writing, at least 1,450 BTCs (stolen by one user, antimalware firm Malwarebytes and Electrum) had been stolen in phishing attacks that faked Thelectrum upgrade tips, with a total value of about $11.6 million. It is worth mentioning that less than version 3.3.4 of Electrum is vulnerable to such phishing attacks, users using electrum wallets 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 v4.0.0, please do not use the link in the prompt message to update to avoid loss of assets.

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.

Qtum Electrum synchronously updates electrum-related code and releases v0.18.9.

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.

Another upgrade under study is the release of a new version of the Electrum-LTC desktop wallet. Electrum-LTC is an SPV wallet that can be used in Windows, Linux, and OS X operating systems.

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

Why use Electrum? Here are a dozen of the benefits of electrum wallets.

Attackers exploit Electrum's software exceptions to construct malicious software update prompts, induce users to update download malware usage, and alert users to carefully check information, identify official websites and software versions, and sign checks if using electrum prompt updates.

The main reason for the Trezor vulnerability is that it does not have built-in multi-signature functionality, so its multi-signature implementation is to support Electrum extensions. This leads to an attack on Electrum, and Trezor is affected.