A hacker linked to the Coinbase user data breach has reappeared with new blockchain activity and a public message aimed at crypto investigator ZachXBT.
In an Ethereum transaction dated May 21, the hacker added a short note, “L bozo” along with a video of basketball player James Worthy smoking a cigar.
This was done after the hacker swapped around $42.5 million in Bitcoin
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ZachXBT pointed out the message on his Telegram channel and said it came from the same wallet involved in the breach that affected nearly 70,000 Coinbase
$3.09B
On May 22, blockchain security firm PeckShield reported more transactions from the hacker. One wallet exchanged 8,697 ETH for about $22 million in the DAI
The original breach happened in December 2024 but was not found until May 11, 2025. According to a filing with Maine’s Attorney General, the hackers accessed names, addresses, and other private details.
The hacker asked for a $20 million ransom in Bitcoin to keep the data from being leaked. However, Coinbase refused and instead offered the same amount as a reward for information that could help identify those behind the attack.
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