A new version of the Zafi e-mail worm is spreading Christmas wishes along with its malicious code, according to antivirus software companies Zafi.D is a mass-mailing worm that arrives in a.zip file attached to e-mail messages with the subject "Merry Christmas." Instead of a gift, however, the e-mail package delivers worm code that infects Microsoft Windows systems on which it is opened. Leading antivirus companies, including McAfee, Sophos, and Computer Associates issued warnings about the new worm and updated antivirus signatures to stop the new threat. In addition to the Christmas well wishes in the subject line, Zafi-generated e-mails contain...