In the latest development, security monitoring platform PeckShield reported that an attacker known as Penpie transferred 1,000 Ethereum (ETH) to the mixing service Tornado Cash in the past three hours. This operation has brought the total amount of Ethereum transferred by the attacker through Tornado Cash to 4,000, valued at approximately $9.6 million. These actions have once again raised concerns and discussions about money laundering activities within the cryptocurrency sector. As a tool aimed at providing anonymity and privacy protection, the use of Tornado Cash has sparked widespread controversy within the crypto community. In response to such incidents, regulatory bodies and security experts call for strengthened cooperation to combat illegal activities using cryptocurrencies.