That's a huge loss for a not-so-big crypto exchange. Several coins have been frozen as well....meaning these are centralized coins. Examples are: Pundi, NPER and Aston. Let's just hope that the affected users will be compensated. Here's the hacker's ETH wallet. Quite a large amount in there: https://etherscan.io/address/0xdf9191889649c442836ef55de5036a7b694115b6#tokentxns