Hacks have always taken place. If there is crypto stored somewhere then someone will always try to steal it. Just because the crypto has been stolen does not mean other vital data was left untouched. Many criminals trade KYC data therefore they must have stolen it from somewhere. And if we have learned something from history, it is that more hacks will occur.
There is almost no exchange that has not been hacked in some form at least once. The fact that we receive information about the amount stolen does not mean that hackers did not reach the database with KYC information. Judging by how vulnerable the security of CEXs is when keeping money, we can only assume that it is even less when it comes to the user's KYC data.