You probably didn't set any recovery questions, did you, topic starter? I've been playing for YEARS, never got hacked. Because they hack by leaving the recovery questions blank. If you never set any, then they can get your password. Since so many players never set questions, that trick works all the time.
There is no other way to hack a Runescape account, except for advanced keyloggers. If you have an anti-spyware program, you will be fine.
So unless you entered the internet without wearing any protection, you probably never made any recovery questions.
I hope this explains why it's game over for "Game_Over".