Blogs and News Resources
Krebs On Security – http://krebsonsecurity.com/ – A very well done security blog by Brian Krebs. He has a great deal of expertise in credit card related fraud, but covers also covers a variety of other types of fraud and hacking.
Twitter – At this point I mostly use Twitter to stay up to date with security news.
Security Tips, Guides and Courses
10 Apache Hardening Tips https://www.linkedin.com/pulse/10-ways-bolster-apache-web-server-security-linhsey-nguyen?trk=hp-feed-article-title-like Tips for improving Apache security.
AD Security – http://adsecurity.org/ – AD Security is a site dedicated to Active Directory security and a great resource for those working in Windows environments.
Cybrary – https://www.cybrary.it/ – Free information security classes.
Standards and Best Practices
NIST – http://nist.gov/information-technology-portal.cfm – The U.S. National Institute of Standards and Technology (NIST) provides a wide range of standards that can be used as a framework, or guide to better securing various aspects of an organization.
SANS – sans.org – SANS is a great resource for security information. Checkout the Resources section of the site to find free articles, webcasts and etc. They also provide security training and certifications that are well regarded, but not cheap.
madwallsecurity.com 