I don't really need the source to find and exploit bugs.
Well, it sure helps!
Who remembers figuring out Procomm Plus for the first time? Usenet? Trumpet Winsock?
Trumpet Winsock, yes!
It helped me back in the 90's to ICMP flood others in IRC networks
I'm sorry about that now...not!
"Don't tell me I'm burning the candle at both ends -- tell me where to get more wax!!"