On recent events @CZ says:
User funds are safe!

It does look like a hack on Binance. Appreciate the quick freeze from Tether (~$971m) and Circle (~$823m).

I don't manage Binance (.com) anymore, but as a shareholder, I expect all user funds will be fully covered.

#Tether froze more than 1.567B USDT related to a potential Binance exchange hack.

Circle is closely tracking reports of a potential exploit involving Binance. In coordination with law enforcement, we have frozen more than 800M USDC associated with the incident and will continue supporting the investigation.