<A target="_blank" href="http://www.usatoday.com/tech/news/2009-09-16-hackers-email-spam_N.htm?csp=34">In the continuing battle between spammers</A> and the rest of us, e-mail filters are being targeted by blasts of malware-laden mail. The idea is to attack quickly, before most filters can be updated, and overwhelm systems.