Hi-tech criminals use botnets to send out spam, phishing e-mails and launch attacks on websites.

BBC: Two million US PCs recruited to botnets

If Capellas can pull all that off, he will get to do the geeky stuff that really turns him on: launch a slew of new Internet-driven services, from central spam filters to home networks that consumers can control from a PDA anywhere in the world.

FORBES: Companies, People, Ideas

Rather than spreading spam through e-mail, criminals are now turning to social networks where they can launch sophisticated attacks against users that appear to come from trusted friends and family.

FORBES: Facebook, Twitter Spam Stopped by Start-Up