In early 2000, a computer hacker who used the now-defunct e-mail address unknownuser1069@hotmail.com seeded a Usenet newsgroup called alt.binaries.pictures.erotica.pre-teen with a clever bit of malicious Windows software. The Trojan horse program, called SubSeven or Sub7, can look innocuous. But once installed, it installs a backdoor in the victim’s computer and can allow files to be extracted and a keystroke logger to be installed. Full Story