Security firm: Electrum Wallet suffered a massive DoS attack that has cost millions of dollars.
Bitcoin Future： electrum avast mail shield security exclusion
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.
In December 2018, Slow Fog first discovered and alerted an attacker to a messaging flaw using the Electrum Wallet client to force an "update prompt" to pop up when a user transfers money, inducing users to update and download malware to carry out a currency theft attack. Although electrum officials said in early 2019 that some security mechanisms were in place to prevent this "update phishing", many users of Electrum are still in the old version (less than 3.3.4) and the old version is still under threat. However, we do not rule out a similar threat to the new version.
env.sh ./bin/cita setup test-chain/0./env.sh./bin/cita setup test-chain/1./env.sh./bin/cita setup-chain/2./env.sh/bin/cita setup test-chain/3.
The discoverdomain function can be run by sending backdoor commands or automatically. Discoverdomain first enumerations the electrum Bitcoin wallet server using a public list, and then tries to query history with a hard-coded hash.
According to the dimensionality reduction security laboratory (johnwick.io), hackers launched a denial of service (DoS) attack on the well-known wallet Electrum server. The hackers used a botnet of more than 140,000 computers to attack Electrum nodes and deployed malicious nodes at the same time . When users connect to these malicious nodes and use the old version of Electrum to send transactions
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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.
Vincent Molinari, founder, CEO and host of Fintech.TV and Digital Asset Report, and CEO of Molinari Media.
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.
Blockchain.info, Electrum Wallet.
Lesson 1: Third-party Electrum servers can link your two transactions together. This can be avoided by running your own Electrum server, supported by your own full node.
Digital wallet developer Electrum has released an emergency patch saying it found a vulnerability that could lead any website hosting Electrum to steal a user's digital currency, exposing passwords to the JOHNSONRPC interface and ingelling hackers full control of the wallet. Earlier, Electrum released the first patch, but it didn't seem to solve the problem, and they released a second update urgently Sunday night local time.
Users of Bitcoin wallet Electrum are facing phishing attacks, according to Johnwick.io. 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 worth about $11.6 million had been stolen from phishing attacks that faked Electrum upgrade tips. 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.
Patch The Electrum client does not display rich text, does not allow arbitrary messages, only strict messages.