According to a report by CoinDesk, Hacken's assessment revealed that approximately $91.3 billion worth of Tron-based USDT, accounting for nearly half of USDT's circulation, is controlled by a 2-of-3 multisig mechanism. This mechanism lacks built-in delays, revocation windows, or rollback features. If an attacker gains access to two of the signing keys, they could change the contract owner and perform management actions such as minting, freezing addresses, or pausing transfers. Hacken emphasized that there is currently no evidence indicating that the keys have been compromised or that any security incidents have occurred. After incorporating Hacken's technical risk assessment, Bluechip upgraded Tether's rating from D to C. https://(wublock123.com)/news/hacken-tron-usdt-91-3b-2-of-3-multisig-key-compromise-67950