[Report: $91.3 Billion USDT on Tron Controlled by 2-of-3 Multisig, Two Keys Compromised Could Seize Contract Authority] Blockchain security firm Hacken has assessed that approximately $91.3 billion USDT on the Tron network (about half of the circulating supply) is controlled by a single contract, and anyone holding two of the three signature keys can take over its management authority. The contract lacks built-in delay, cancellation windows, or revocation mechanisms. Hacken auditors stated that attackers could first change the contract owner, then mint USDT, freeze addresses, destroy frozen balances, or collect transfer fees, all without accessing user wallets. This multisig wallet does not hold user funds but controls the USDT contract itself—granting the power to mint tokens, freeze addresses, and reassign ownership.