The cybercriminal responsible for the theft of funds from the cryptocurrency exchange Poloniex has initiated the process of moving Ethereum (ETH) to the mixing service Tornado Cash, according to Arkham, a digital asset de-anonymizing platform. Arkham has observed that the hacker transferred 1126.1 ETH, valued at over $3.4 million, through a series of 20 transactions on Monday and Tuesday. These transactions mark the hacker’s first foray into the controversial Ethereum-based crypto mixer, which enables users to conceal their digital assets.
In an earlier attack in November, the hacker managed to steal $56 million worth of ETH, $48 million worth of Tron (TRX), $18 million worth of Bitcoin (BTC), and smaller amounts of other cryptocurrencies from Poloniex. Despite the exchange’s offer of a 5% white hat bounty, which went unclaimed, the hacker currently retains $181.47 million worth of crypto in their primary address, as reported by Arkham.
Projects affiliated with Justin Sun, the founder of Tron, have been targeted by a series of attacks in recent months. In September, hackers exploited HTX, a Sun-associated exchange, to steal approximately 4,999 ETH worth $7.9 million, as reported by blockchain security firm PeckShield. In November, hackers targeted both HTX and Heco Bridge, another Sun-affiliated project used for transferring funds between Ethereum and the energy-saving blockchain Heco Chain, resulting in combined losses of $100 million, according to cybersecurity firm Cyvers. Moreover, in January, HTX experienced a distributed denial of service (DDoS) attack, causing a temporary service interruption. DDoS attacks aim to flood a website with traffic to overwhelm its infrastructure.
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