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One user wanted to transfer his Bitcoin to another wallet, and found himself facing huge fees
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The likely reason was that a hacker was able to exploit a vulnerability in the victim’s wallet to artificially increase the commission and steal it from him.
On November 23, at 9:59 a.m. UTC, a “whale” appeared. Transfer 55.77 Bitcoin ($2.1 million) from his wallet to another cryptocurrency wallet. When you carry out operations on cryptocurrency markets – purchases, sales, transfers – a commission is charged, but in this case the cost of the operation was staggering: The user had to pay 83.56 Bitcoin ($3.1 million) To complete it.
The wallet address that was used to make the payment that day, and before the registration fee occurred, three more Bitcoin transactions were made. The reception address is also relatively new, dating back to October 16th.
as shown On the blockThe previous highest commission in history was $500,000. This happened last September due to an error by the service provider Paxos. F2Pool, the mining “cooperative” that facilitated the deal, has wound up Pay The deal is to Paxos.
Now whoever made that deal and paid that $2.1 million commission is claiming it It was hacked. In a newly created account on Someone was running a script on that wallet And the scenario contains a strange calculation of commissions…”
Then that user posted another message in which he showed the signature with which the commission was paid, which is the information that Confirmed by Mononautdeveloper of the Mempool platform that works to track the traceability of these operations.
Deal been extracted – It was thus added to the Bitcoin blockchain – by the AntPool organization, but it is not clear whether AntPool will refund the amount as it did in F2Pool with the record commission that occurred in September by mistake. User named niftydev It states That the account has already been hacked.
According to Munot, the problem may be the wallet It is created with low entropy, This makes it vulnerable to cyber attack. According to experts, the transaction was modified using a feature of the Bitcoin protocol that allows the sender to increase the fee for an unconfirmed transaction so that the network processes it more quickly. “If this is a low-entropy wallet, it is possible that multiple attackers could compete to steal the funds,” Munot suggested.
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