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A botnet with more than 140,000 machines has launched a DoS attack on the server of Bitcoin wallet Electrum in an attempt to direct users to software versions designed to steal Bitcoin. Electrum users have been advised to take extra care when using the platform until the issue is resolved. Security researchers familiar with the matter say that if a user installs a fake version of Electrum, all funds contained in the old version will be lost immediately. (TNW)

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Since the end of December 2018, Bitcoin wallet Electrum users have lost 771 BTCs (worth about $4 million) in phishing attacks, according to a study released by Malwarebytes Labs. Electrum is known to implement a variant of a technology called Simplified Payment Verification (SPV), which allows users to send and receive transactions without having to download a full copy of the Bitcoin blockchain. An attacker is exploiting a vulnerability that anyone can manipulate a public Electrum peer to carry out an attack. (TNW)