Garbage can provide important details for hackers: names, telephone numbers, a company's internal jargon.

A company can spend hundreds of thousands of dollars on firewalls, intrusion detection systems and encryption and other security technologies, but if an attacker can call one trusted person within the company, and that person complies, and if the attacker gets in, then all that money spent on technology is essentially wasted.

I'm still a hacker. I get paid for it now. I never received any monetary gain from the hacking I did before. The main difference in what I do now compared to what I did then is that I now do it with authorization.

The intent of the individuals who created the DDoS attacks has nothing to do with hacking, and they are vandals, not hackers.

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.

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

I was addicted to hacking, more for the intellectual challenge, the curiosity, the seduction of adventure; not for stealing, or causing damage or writing computer viruses.