The hacker, who breached Poly Network on August 10 for $611 million, threatened to delay the final return of funds at least until next week.
Within a day of the attack, the hacker announced a willingness to return the assets and proposed creating multisig wallets for this purpose. The keys to them are controlled by both sides.
As of August 12, the hacker had transferred the stolen funds to the project’s addresses on the networks Binance Smart Chain and Polygon — $253 million and $85 million, as well as all assets on the Ethereum blockchain. The exception was the $33 million in USDT, an address blocked by the stablecoin issuer, Tether.
“Your essays are quite convincing, but in practice there is a sense of distrust. What a funny game. You don’t even intend to unlock my USDT account. I am not prepared to publish the key this week,” the hacker wrote in the signature to the Ethereum transaction on August 18.
This was in response to the message from the Poly team, which assured the hacker that it was doing everything possible to lift the Tether block and was counting on a “quick result.”
“We still hope you can provide us with the key this week, because thousands of users are waiting for the return of their assets,” they added.
The team also transferred 160 ETH to the hacker, which roughly corresponds to the amount of the reward previously offered to him, $500 000. The hacker refused it.
Earlier, experts suggested that one of the reasons for returning the funds was that the hacker exposed personal data.
He himself stated that he hacked Poly Network ‘for fun’.
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