Thanks for your support @olumideolowoyeye!!
You're spot on: I was really too careless. Yet, these type of experiences help us to grow, so I'm actually grateful for the lesson.
@sami100 will go to hell anyways, so we don't need to worry about that. Yet, nobody should support his account at any time. If there was a chance to even penalize him for what he's done to me and other users, that would be even nicer.
But revenge is for the weak. I just hope nobody else steps into the same trap!