Incident Overview
At 15:25 on May 20, Tornado Cash encountered a governance attack. The attacker granted himself 1.2 million votes through a malicious proposal, exceeding the number of legal votes (about 700,000), and gained full governance control. An attacker could withdraw all locked votes and drain all tokens in the governance contract, disabling routers, though the attacker would still not be able to drain individual pools. Tornado Cash governance attackers obtained a total of 483,000 TORN from governance vaults.
Sources & References
This record presents information attributed to the linked sources. Incident dates describe the original event, not a new report. Reported loss figures reflect the source record and are not current market valuations.