Was the Mysterious $3 Million Bitcoin Transaction a Hack?

Millions are gone – Personal guard cryptocurrencies can prove to be a security challenge. In fact, the slightest mistake can pave the way for a hacker and the loss of your assets. One user learned this the hard way when he stole 139 BTC.

A Bitcoin transaction with millions of dollars in fees

Last week, a Large BTC holder made headlines after shelling out dozens of BTC in transaction fees. Thus, our internet user made a transfer of 55 BTC, or 2 million dollars. However, he has backed by 83 BTC ($3.1 million) in transaction fees.

In practice, the transaction was validated by the mining pool Antpool. Therefore, she was the one who won the jackpot of 83 BTC in fees.

Obviously, such an operation will not have left the community indifferent. Thus, many Internet users sought to better understand this unlikely transaction.

Theft of $5.1 million in BTC

The day after the event, a new account titled @83_5BTC appeared on X (Twitter). Your creator states that he is the wallet holder paid 83 BTC in fees.

According to his post, it appears that he never carried out this transaction and is thinking about stealing his BTC.

In fact, he explains that he made what appears to be a key renewal. He like that transferred 139 BTC to a new, newly created cold wallet. Unfortunately, as soon as the amount arrived at the new address, the funds were transferred directly to another wallet. This is when 83 BTC fees were spent.

“It was my BTC that paid the high fees. I created a new cold wallet, transferred 139 BTC to it and they were immediately transferred to another wallet. My guess is that someone was running a script on this wallet and the script had a strange fee calculation. »

Explains the internet user.

Later, @83_5BTC’s identity was confirmed. On the one hand, by signing a message on the network demonstrating ownership of the address. On the other hand, after validation from internet user @niftynei who claims to know @83_5BTC personally.

An entropy problem

Quickly, the analysis carried out by Mononaut bring him to consider bad entropy when generating the portfolio. As a reminder, entropy represents the level of randomness used in generating the key. If this is too weak or predictable, a hacker could also find the key and steal the funds.

“It may make sense for automated low-entropy wallet scanning scripts to be configured to spend a high percentage of the value on fees in order to thwart competitors (or victims) who attempt to distribute substitutes. »

Reveals the Mononaut.

Mainly because before the transaction with fees of 83.5 BTC, a first transaction was sent, this time with fees of 71 BTC. It is still unclear whether two hackers attempted to attack the same wallet at the same time or whether this was part of a single hacker’s strategy.

Once again, hackers in the crypto ecosystem are demonstrating their ingenuity. In fact, they are looking for the smallest loophole to steal your precious cryptocurrencies. Last week, the Exchange platform HTX and blockchain Heco were targeted in a hack worth over $100 million.

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