The 25-year-old researcher has spent years analyzing how spyware and adware programs work and publicizing his findings. That often results in red faces and, occasionally, lawsuit threats from companies like WhenU and Claria, formerly known as Gator. When testing spyware and adware, Edelman isn't about to sacrifice his own Windows XP computer. So he uses the VMware utility to create a virtual Windows box.

"I infect the hell out of it," he says. "It destroys the infected machine." A law student at Harvard University, Edelman is also working on a doctoral degree in economics. CNET News.com caught up with him after he spoke at a conference in San Francisco sponsored by News.com's sister site, Download.com.