Massachusetts Institute of Technology
Mit: Open Course Ware: Network and Computer Security
This MIT course on network and computer security covers topics such as security in multi-user distributed systems, cryptography, authentication, intrusion detection, and many other security topics.
Khan Academy
Khan Academy: Unit: Online Data Security
Readings and practice problems about online data security.
Other
Gfi: Email Security
This site provides useful background information on email security issues. It will help you examine the security threats facing your email system and determine what kind of email security solution you need.
Khan Academy
Khan Academy: Symmetric Encryption Techniques
Learn how symmetric encryption techniques help protect computer data.
Goodwill
Gcf Global: Internet Safety: Wi Fi Security
Learn tips and information about securing wireless internet networks.
Other
Commonwealth of Australia: How to Protect Your Business From Cyber Threats
Learn some tips and suggestions to protect computers from cyber threats.
Other
Department of Homeland Security: Protect Myself From Cyber Attacks
Use these steps to help devise a solution to counter a cyber attack.