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The hacker who stole around $28.9 million in tokens from multi-chain decentralized exchange (DEX) aggregator Transit Swap has returned 70% of the funds less than 24 hours after the attack, the aggregator said via Twitter on 2 October.
Early on Sunday the team behind Transit Swap revealed they had paused all services and “completely suspended” its contract after finding the DEX aggregator was attacked by hackers, who were able to steal roughly $28.9 million in tokens. After a review of the incident, the Transit Swap team issued an apology to its community, and admitted that the hacker had exploited an internal bug on the swap contract.
Blockchain security companies PeckShield, Bitrace, SlowMist, and TokenPocket quickly responded to the incident, and with their help the DEX aggregator was able to acquire relevant information on the attacker, such as his IP, email address, and associated on-chain addresses.
Less than 24 hours after the attack happened, Transit Swap revealed that with the “joint efforts of all parties” the hacker had returned roughly 70% of the stolen assets to two addresses. According to blockchain data, the hacker has so far returned 3,180 Ether (ETH), 1,500 Binance-Peg ETH, and 50,000 BNB.
Transit Swap noted it is continuing to monitor the situation and is keeping in touch with the hacker through email and on-chain methods, with a focus on retrieving the remaining 30% of the stolen funds. The DEX aggregator is currently “rushing to collect specific data” on the affected users, and formulate a recovery plan.