Hacker Steals $600m from Poly Network “for Fun”, Returns Half

A hacker stole more than $600m from the decentralized finance platform Poly Network “for fun” and has returned half.

Poly Network later received $3.3m worth of Ethereum, $256m worth of Binance Coin, and $1m worth of Polygon after it asked the heist suspect on Twitter to work out a solution.

“The amount of money you hacked is the biggest in defi history,” said Poly Network.

According to the hacker, he was only having fun and was “not very interested in money”.

The hacker also published a three-page-long Q&A session regarding the heist and his motives.

“I know it hurts when people are attacked, but shouldn’t they learn something from those hacks?” said the hacker.

According to the hacker, he saw some vulnerabilities and flaws within Poly Network that would be patched without informing customers so he decided to exploit them to make a point.

Tom Robinson, co-founder of Elliptic, London-based blockchain analytics and compliance firm said that the hacker has not yet returned $269m in Ether tokens and $84m in Polygon.

The hacker also provided his cryptocurrency wallet address and asked for donations for “deciding to return the stolen assets.”

“I think this demonstrates that even if you can steal cryptoassets, laundering them and cashing out is extremely difficult, due to the transparency of the blockchain and the use of blockchain analytics,” said Robinson.


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