I do computer restoration/virus removal/clean up, server and computer security on a lower level, hardware instillation, and basic-moderate networking.
Example, you need me to clean up a virus, install a new hard drive, set up a router (home or business), or do low level security protection on your servers and networks, I'm your man.
However, if you have, for example, a Korean cyber-terrorist attempting to take control of you systems and steal valuable information, I would suggest finding somebody else. I could have the common sense to disconnect you from the internet and all outside sources entirely however, but after that I wouldn't know what to do. Most people I know who want to work with computers want to be the guy that sets up the massive super security systems against that Korean cyber-terrorist, or hack some benign porn files for the military/government.
“Teach me how to hack!”
"What, like, with an axe?"