i think this is the first time this exchange has been hack, i say i have coins there but no value, but if you have lots of eth and others thats is a major concern, since we don't know if they can refund the loses.
If so then its unfortunate for them. I didnt use this exchange eversince so i dont really know how tight their security was but often seeing them at social media post.
People should only pick a topnotch exchange as we dont know when they will experience some breach like this and choose an exchange with high level security. Having funds on exchange isnt bad cause we know traders stay their money there but for own good only money or funds that can be risk should put in there.