In a situation of crypto criminal offense evidently not shelling out, a hacker who stole some $600 million in electronic belongings from decentralized finance system Poly Network has begun to return the sick-gotten gains.

Poly Network disclosed Tuesday it was the concentrate on of 1 of the greatest at any time cryptocurrency heists and told the hacker, “We want to create communication with you and urge you to return the hacked belongings.”

As of about 6:30 pm London time on Wednesday, the hacker experienced returned $260 million in belongings, which include $256 million well worth of Binance Intelligent Chain, $three.three million of Ethereum, and $1 million of Polygon. A complete of $269 million in Ethereum tokens and $84 million in Polygon tokens was nevertheless lacking.

“I believe this demonstrates that even if you can steal crypto belongings, laundering them and cashing out is really hard, due to the transparency of the blockchain and the use of blockchain analytics,” mentioned Tom Robinson, main scientist of blockchain analytics organization Elliptic.

“In this situation, the hacker concluded that the most secure possibility was just to return the stolen belongings,” he included.

The hack exploited a vulnerability in Poly Network, a DeFi system that facilitates peer-to-peer transactions with a focus on allowing for users to transfer or swap tokens across diverse blockchains.

“DeFi has become a essential concentrate on for attacks,” CNBC mentioned, noting that since the commence of the calendar year right up until July, DeFi-linked hacks totaled $361 million — an raise of practically three situations from all of 2020, in accordance to crypto compliance organization CipherTrace.

Shortly immediately after it was hacked, Poly urged cryptocurrency miners and exchanges to “blacklist” tokens coming from the hacker’s addresses. Stability organization SlowMist mentioned  its scientists experienced “grasped the attacker’s mailbox, IP, and device fingerprints” and had been “tracking attainable identity clues linked to the Poly Network attacker.”

“With the inherent transparency of blockchains and the eyes of an whole business on you, how could any cryptocurrency hacker assume to escape with a huge cache of stolen cash?” blockchain forensics organization Chainalysis mentioned.

In notes posted on a blockchain, the hacker mentioned he experienced made the decision to return the stolen belongings simply because he was “not extremely intrigued in income.”

blockchain, decentralized finance, DeFi, electronic belongings, Hacker, Poly Network