A Security Hole In The Bitcoin Network Puts Users At Risk
The bitcoin network is a peer-to-peer payment system that operates on a cryptographic protocol. The network is maintained by a decentralized user base of miners, who validate and verify transactions in exchange for newly minted bitcoins.
The most recent security breach affecting bitcoin users was a denial of service (DoS) attack that took place over the weekend. The DoS attack is carried out using an exploit known as transaction flexibility, which allows attackers to make bitcoin transactions even if they don't have enough funds to pay.
As a result, many bitcoin exchanges have stopped processing withdrawals and deposits, causing significant delays in transaction processing. Transaction flexibility has been leveraged in other networks before, but this is the first time it has been used on the bitcoin network itself. It's not clear if this is a targeted attack or just another bug that escaped Google's testing process before being released to the general public.
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