Bitcoin User’s Hack Linked to Enormous 83.65 BTC Fee Incident

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In a startling development in the cryptocurrency world, a Bitcoin user has come forward alleging a hack that is directly connected to the recent incident involving an erroneous transaction fee of 83.65 BTC. This revelation shifts the narrative from a simple error to a more sinister scenario of cyber theft.

Unraveling the Hack Behind the Bitcoin Fee Anomaly

The user, known on social media as “@83_5BTC,” reported that after transferring 139 BTC to a new cold wallet, hackers immediately redirected the funds to another wallet. In this transaction, 55.77 BTC went to the hackers, while an astonishing 83.65 BTC was paid as a transaction fee, surpassing the previous record fee of 19.8 BTC.

Mononaut, a prominent figure in the Bitcoin community and operator of the mempool.space Bitcoin explorer, offered insights into the incident. He suggested that the wallet’s vulnerability stemmed from “bad entropy,” implying weak randomization during its creation, which compromised its security.

The situation was further complicated by the “replace-by-fee” (RBF) method used to escalate the transaction’s priority. Mononaut theorized that if the wallet had low entropy, it could have been a target for multiple attackers, each trying to outbid the other with higher transaction fees.

The alleged victim, @83_5BTC, tried to establish ownership of the compromised wallet by sharing a signed message on social media. While Mononaut verified the message, he warned that it’s unclear whether the victim or the hacker signed it, adding to the complexity of the situation and the uncertainty around the potential recovery of the fees by Antpool.

The Importance of Wallet Security and Proper Entropy

This incident has brought to light the critical importance of wallet security in the cryptocurrency space. Mononaut’s advice underscores the need for robust entropy in wallet creation, especially for handling large sums, and the potential benefits of using multisig (multiple signature) wallets for enhanced security.

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