epidemic. Others use global checksum systems, which are a more effective imple-
mentation in comparison to the filters that require “training.”
Something we have observed with phishers is that they seem to successfully
pass their phish e-mails through the standard spam filters.This is largely due to
the fact that they simply learned their traits from spammers, or they were once
spammers and have now moved “up” to phishing.The majority of spam filters
used today are based on Bayesian algorithm that looks for certain characteristics
in the e-mail and scores them. Bayesian filtering measures the probability of spam
via its characteristics.This is a scoring ...