Did they release any information on how the hacker was able to access their funds on that hot wallet? Was it due to venerability on kucoin's platform or, he straight up hacked the wallet? If he hacked the wallet, don't the majority of exchange uses a multi-sig wallet?
You should watch the story about that and kucoin has already published it on its blog
https://www.kucoin.com/news/en-the-latest-updates-about-the-kucoin-security-incidentIt's also getting regular updates too.
It's not caused by the vulnerability but i guess some people said that kucoin was getting hacked caused phishing link. The complete story about this is not yet created by kucoin.
You should regularly watch the updates too.