One who uses programming skills to gain illegal access to a computer network or file.
Well, by this definition, Linux, Bonzi Buddy and the numerous other programs listed are NOT good signs of someone being or becoming a hacker.
Obviously your children are smarter then you and you just felt jealous because your son knew more then you. Maybe you should try Linux and the numerous other programs you mentioned becoming coming to your false conclusions. So far, you sound like an uneducated dunce. Read read read educate educate educate learn learn learn - then speak up otherwise you'll just get laughed at severely.