Tether USDC and some more have the blacklist function integrated in their contract. It can get used to lock a wallet so it can never send usdc tether and so on. can compound do the same?
None of the markets (cTokens contracts) can lock/blacklist an individual address; each market can pause new activity (supplying, borrowing, transferring) in the aggregate for all users, in an emergency; this power is held by the Community Multi-sig.
Notably Tether or USDC could blacklist the cUSDT and cUSDC addresses preventing withdrawal