The New York Times writes:
Antispam companies fought the scourge successfully, for a time, with a blend of three filtering strategies. Their software scanned each e-mail and looked at whom the message was coming from, what words it contained and which Web sites it linked to. The new breed of spam call it Spam 2.0 poses a serious challenge to each of those three approaches.
Some antispam veterans are not optimistic about the future of the spam battle. As an industry I think we are losing, Mr. Peterson of Ironport said. The bad guys are simply outrunning most of the technology out there today.