According to a criminal complaint and court affidavit, Jared James Abrahams hijacked webcams to capture naked images of the women and then blackmailed them for more. He allegedly forced an Irish girl and a Canadian woman to disrobe for him, a criminal complaint unsealed Thursday said. The criminal complaint identifies at least seven victims by initials only -- some of whom, including Wolf, he knew personally -- and revealed that, once confronted, Abrahams admitted to his crimes in an interview with an FBI special agent. The college freshman computer scientist acknowledged infecting the computers with malware, watching his victims change their clothes, and using photographs against his victims, according to the affidavit. According to law enforcement sources, the investigation was sparked after Wolf alerted authorities to a change in her Facebook password and an alleged sextortion demand from Abrahams. Abrahams allegedly changed her Twitter account photo to a half-naked image of her and then sent her two images of her naked that were taken inside her home by her webcams months before, according to the criminal complaint.