ZKsync recovers $5M of stolen tokens after hacker accepts bounty offer

The ZKsync Association has actually verified the healing of $5 million worth of taken tokens from an April 15 ZKsync security occurrence including its airdrop circulation agreement.

The hacker consented to accept a 10% bounty and return 90% of the staying taken tokens, moving the ZKsync Security Council nearly $5.7 million throughout 3 transfers on April 23.

” We’re pleased to share that the hacker has actually complied and returned the funds within the safe harbor due date,” ZKsync Association published to X on April 23, which was later on reposted by ZKsync’s X account.

Matter Labs, the business behind the ZKsync procedure, likewise reposted the news shared on X.

The ZKsync X account formerly verified that no user funds were jeopardized.

The hacker sent out 2 transfers on the ZKsync Period blockchain, including $2.47 million worth of ZKsync (ZK) tokens and $1.83 million worth of Ether (ETH) to the ZKsync Security Council’s ZKsync Period address.

Another 776 ETH worth almost $1.4 million was likewise sent out to their security council’s Ethereum address, Etherscan information programs.

The very first transfer was made on April 23 at 2:39:57 pm UTC on and the last transfer was made approximately 13 minutes later on– all within the 72-hour window that ZK Sync had actually at first set.

ZKsync Association stated the business would release a last report exposing more information from the security occurrence.

How the hack occurred

The hacker breached ZKsync’s admin account, permitting them to make use of the airdrop circulation agreement’s sweepUnclaimed() function to mint 111 million unclaimed ZK tokens, worth roughly $5 million at the time of the April 15 attack.

The hack happened while ZKsync remained in the procedure of airdropping 17.5% of ZK’s token supply to environment individuals.

The recuperated quantity– nearly $5.7 million– went beyond the $5 million initially taken due to an increase in the market worth of the taken tokens, with ZK and ETH increasing 16.6% and 8.8% respectively considering that the April 15 attack, according to CoinGecko information.

In spite of the possession healing, the ZK token stopped working to increase considerably on the news and is presently down 0.2% over the last 24 hr.

ZKsync Period is an Ethereum layer 2 service that utilizes zero-knowledge rollups to batch and procedure deals offchain. It has almost $59 million in overall worth locked on its chain and has more than $2 billion in real-world properties onchain, according to DefiLlama and RWA.xyz.

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