Hackers are insecure ppl or cyberbullies or snobs
Defense: Make a firewall(Recomend),or tape them put em on Youtube and get ppl to attack them with reports,Don't accept friend request from ppls who look like n00b or randomley do it(They send a virus to your computer), and NVR ever Piss off a hacker, they will key logg you.

Offense: Get a Good Hacker(someone who doesn't hack ppl for the wrong, only if they are hackers who are bad), or time to fight fire with fire, or just report em.