[Matigo]

I guess mine would have to be ForumKorner to be honest, when all the Staff scammed/leaked accounts/sold accounts etc.
Skorp, Hope and Michael.
As for @242 I am guessing you are Seven, I don't know anything about the situation and I am sorry.

[Naho]

Like you I've only heard of experiences, I haven't been a part of any forums that had mass hacking's or database leaks that I'm aware of. Except nulled.io but I never used them.