Uncle Hai: What's the first thing to get started with a bitcoin contract? What should I do if I make a loss on my investment?
Bitcoin Future： what's my electrum bitcoin address
eclair: v0.3.1 and above clients correctly address security concerns, and if the user uses bitcoin core as the back end, previous versions of eclair clients have security implications. The electrum user, on the other hand, checks only the script, not the quantity. (CVE-2019-13000)
Hackers launched a denial-of-service (DoS) attack on a well-known wallet Electrum server, according to Johnwick.io. Hackers used botnets of more than 140,000 computers to attack Electrum nodes and simultaneously deployed malicious nodes. When a user connects to these malicious nodes and sends a transaction using an older version of Electrum, the user is prompted to update the Backdoor Client. If the user installs the client as prompted, the private key is stolen and all digital assets are lost. Millions of dollars of digital currency have been stolen, according to Electrum officials. De-dimensional Security Labs recommends that users of electrum wallets be updated to the latest version of the client through the official website and never use the link in the prompt message.
The report defines the Vertcoin risk rating as C, which is a higher risk level.
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Bitcoin Wallet Electrum releases Selectrum 4.0 beta support for the Lightning Network.
In this demo, Electrum developer Chris Belcher shows how to set up and use an Electrum personal server.
Jack Dorse, chief executive of Square and Twitter, tweeted that Square's Cash App has added an automatic recurring bitcoin service. Cash App users can now set how often they buy Bitcoin daily, weekly, or every two weeks for a minimum purchase of $10. In addition, Cash App users can now change the display unit from Bitcoin (BTC) to Sats
In fact, the fact that users don't end up using the same Bitcoin address is the "best experience" of using Bitcoin safely, which is one of the reasons why Electrum and other clients provide multiple Bitcoin addresses to send or receive utxos (meaning unspent bitcoins).
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.
How do I transfer bitcoins? Blockchain 100 Ask Episode 15.
In recent days, hackers or hacker groups have stolen more than 200 bitcoins worth about $750,000 by attacking the infrastructure of electrum Bitcoin wallets. The attacker is targeting Electrum.
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 posted a message about the incident on Twitter today, claiming that "there are currently phishing attacks against Electrum users" and imploring users to check the validity of their login information.