This is really unfortunate, the year 2023 was full of CEXs and DEXs being hacked and millions of dollars stolen, I can remember some of them like:
CoinEx has had about 55 million or more stolen
HTX is about $99 million
Atomic Wallet is about $100 million
Mixin Network is about $200 million
Of course, there are other hacks that have occurred that I do not remember or that are not as important as these incidents. It may be useful to collect them in one topic.