WormWarner is a Perl script that is used to warn
hosts that are probably infected by a worm. It
decides wether a host is infected by analyzing the
data from the Apache log files. It currently
recognizes CodeRed, Nimda, the Linux.Slapper.Worm,
and the FreeBSD.Scalper.worm. Warning is done by
trying to contact the SMTP server on the infected
host and sending an email to the postmaster.