Hacker returns all $610 million in cryptocurrency stolen in cyberattack

From CNET: One of the largest cryptocurrency thefts ever appears to have been resolved -- by the hacker. Poly Network, a decentralized finance platform, reported Monday that more than $600 million in cryptocurrency was stolen from its coffers through a code vulnerability.

Poly Network is a decentralized finance platform, or defi, that works across blockchains. It lets people swap tokens across multiple blockchains, including popular cryptocurrencies including Bitcoin and Ethereum. In the initial attack, the hacker stole $273 million of Ethereum tokens, $253 million in tokens on Binance Smart Chain and $85 million in USDC on the Polygon network, according to The Block.

The hacker, known as Mr. White Hat, began returning assets almost immediately after the theft was revealed, apparently moving funds piecemeal. On Monday morning, Poly Network was contacted by the hacker, who provided a private key to the remainder of the outstanding funds.

"At this point, all the user assets that were transferred during the incident have been fully recovered," the company reported in a Medium post on Monday. Poly Network said it's now working to return the assets to their owners.

It's not immediately clear why the hacker decided to return the money, but a message included in the digital currency transaction by an anonymous person claim to be the hack said they were "[quitting] the show," according to CNBC.

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