Hackers have began returning some of the $600 million they stole in what’s probable to be a single of the most significant cryptocurrency thefts ever.

The cybercriminals exploited a vulnerability in Poly Community, a system that seems to be to hook up distinctive blockchains so that they can perform collectively.

Poly Network disclosed the assault Tuesday and questioned to create interaction with the hackers, urging them to “return the hacked property.”

A blockchain is a ledger of things to do on which numerous cryptocurrencies are centered. Each electronic coin has its possess blockchain and they’re distinctive from each individual other. Poly Community statements to be in a position to make these different blockchains work with every other.

Poly Community is a decentralized finance platform. DeFi is a wide phrase encompassing monetary applications dependent on blockchain technology that seems to lower out intermediaries — this kind of as brokerages and exchanges. That’s why, it can be dubbed decentralized.

Proponents say this can make economical apps this sort of as lending or borrowing much more economical and more cost-effective.

“The amount of cash you hacked is the largest in defi background,” Poly Community said in a tweet.

In a bizarre switch of activities Wednesday, the hackers commenced returning some of the cash they stole.

They despatched a concept to Poly Network embedded in a cryptocurrency transaction expressing they had been “completely ready to return” the funds. The DeFi platform