Pfizer's Viagra-hawking zombiesPfizer, the pharmaceutical company most adept at preying on male insecurities, has come down with a bad case of zombies. For the past six months, its computers have, coincidentally, been spamming the Internet with unsanctioned advertisements for its erectile-dysfunction medication, Viagra. Apparently a group of hackers has taken control of some of the corporation's PCs — called "zombies" in computer-security parlance — to hawk penny stocks and fake Rolexes alongside Pfizer's own flagship product. According to researchers at security firm Support Intelligence, who tipped off Wired News, Pfizer doesn't even realize it has an infection. Or perhaps it's just figured out a sweet new marketing campaign. (Photo by Len Peralta)