A Hacken review reported by CoinDesk says roughly half of USDT circulating on Tron—estimated at about $91.3 billion at the time—was governed by a 2-of-3 multisig (a control requiring two of three signers) with no built-in timelock (a delay before privileged changes take effect). The finding concerns administrative powers over the token contract, including minting, freezing addresses and reassigning ownership, rather than custody or ownership of users’ balances. Hacken found no evidence of compromised keys or a security incident, while assigning USDT a cybersecurity score of 3.3 out of 10. Bluechip’s separate assessment describes the absence of timelocks, on-chain reserve feeds and mint paths tied to backing, while its page displays a C grade dated September 3, 2026. The reported $91.3 billion figure was not independently reproduced, the supply denominator was not published, and full verification awaits the Hacken assessment, signer details, observation block and any response from Tether.