The 20 Most Useful IT Security Websites

By Jon Brodkin,

Network World

April 07, 2008

IronPort Security Network

This site gets into the nitty-gritty of the hacking world: one report lists the top 100 spammers by IP address in the past 24 hours. A simple search tool on the site lets you check the credibility of any IP address or domain name. www.senderbase.org

For the complete list of useful sites, please visit: http://www.networkworld.com/slideshows/2008/040708-useful-it-sec-sites.html?zb&rc=sec