Pfizer and Microsoft team up against Viagra spam
Sunday, February 13, 2005 New York –"Buy cheap Viagra through us - no prescription required!" Anyone with an active email account will recognize lines like this one. According to some reports, unsolicited advertisements (spam) for Viagra and similar drugs account for one in four spam messages. BACKGROUND Spamming remains one of the biggest problems facing email users today. While users and systems administrators have improved their defenses against unsolicited email, many spammers now insert random words or characters into their letters in order to bypass filters. The W