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Blockchain data platform Arkham Intelligence says that the North Korean state-sponsored Lazarus hacking group is responsible for swiping over $1.4 billion worth of Ethereum (ETH) and related tokens from crypto exchange Bybit on Friday.
The connection to Lazarus was made via on-chain data that linked activity to previous attacks tied to Lazarus, a group that has been tied to numerous other industry hacks and exploits. The connection was made by pseudonymous on-chain sleuth ZachXBT, who has helped solve many other crypto hacks in recent years.
"His submission included a detailed analysis of test transactions and connected wallets used ahead of the exploit, as well as multiple forensics graphs and timing analyses," Arkham posted on X.
BREAKING: BYBIT $1 BILLION HACK BOUNTY SOLVED BY ZACHXBT
At 19:09 UTC today, @zachxbt submitted definitive proof that this attack on Bybit was performed by the LAZARUS GROUP.
His submission included a detailed analysis of test transactions and connected wallets used ahead of… https://t.co/O43qD2CM2U pic.twitter.com/jtQPtXl0C5
— Arkham (@arkham) February 21, 2025
Arkham had posted a bounty, offering nearly $30,000 worth of ARKM tokens in exchange for figuring out who was behind the $1.4 billion hack that rocked Bybit early Friday—and proceeded to shake crypto markets thereafter.
Editor's note: This story is developing and will be updated with additional details.