Is there any malicious software web traffic detection tool or research?

Hi all,
      At present, there are more and more web traffic caused by malicious
softwares. For example, some malicious plugin may periodly visit some sites
to improve their website's ranking, or some plugins may periodly collect
the users usage profile. Is there some tool or research available to detect
such activities through web traffic analysis? Thank you!
Regards,
seacxm

------------------------------------------------------------------------
Test Your IDS

Is your IDS deployed correctly?
Find out quickly and easily by testing it
with real-world attacks from CORE IMPACT.
Go to http://www.coresecurity.com/index.php5?module=Form&action=impact&campaign=intro_sfw
to learn more.
------------------------------------------------------------------------
Received on Jun 10 2008