When an attacker fails with one person, they often go to another person. The key is to report the attack to other departments. Workers should know to act like they are going along with what the hacker wants and take copious notes so the company will know what the hacker is trying to find.

I use Mac. Not because it's more secure than everything else - because it is actually less secure than Windows - but I use it because it is still under the radar. People who write malicious code want the greatest return on their investment, so they target Windows systems. I still work with Windows in virtual machines.

I characterize myself as a retired hacker. I'm applying what I know to improve security at companies.

No way, no how did I break into NORAD. That's a complete myth. And I never attempted to access anything considered to be classified government systems.

As a young boy, I was taught in high school that hacking was cool.

Steve Wozniak and Steve Jobs founded Apple Inc, which set the computing world on its ear with the Macintosh in 1984.

I saw myself as an electronic joy rider.