My sites have never been hacked, but I quess it's because my sites haven't been up until recently (sorry if my english is bad)
I have hacked my school's forum once lol but for a joke and I repaired it anyway. Yeah I have had my forum hacked, only to find out it was my FRIEND! But he taught me so yeah.
I've had a few attempts at hacking a few of my websites in the past, however these days it's not as frequent. I'd usually have a good system administrator in place, and he'd give them a little rude awakening whenever they'd try to get in.
Why am I so unlucky? I went out of station for a week or so, and I got hacked, the image uploader site I was making! This sucks...