National Institute of Standards and Technology Computer Security Division
The NIST CSD develops information security standards and releases reports on a variety of information security topics.
SANS Internet Storm Center
The SANS ISC provides analysis of emerging information security threats.
United States Computer Emergency Readiness Team
The US-CERT provides timely information about current security issues, vulnerabilities, and exploits.
Emerging Threats is an open source community project that produces timely Snort Signature sets and firewall rules.
Open Information Security Foundation (OISF)
The Open Information Security Foundation is a non-profit foundation organized to build the next generation IDS\IPS engine.
Open Web Application Security Project (OWASP)
The Open Web Application Security Project is focused on improving the security of application software.
Phishing: Phishing attempts can be reported to the US-CERT at email@example.com.
Cyber Crime: Cyber crime can be reported to the Internet crime Complaint Center at http://www.ic3.gov/complaint/default.aspx
VirusTotal is a free service that analyzes suspicious files and facilitates the quick detection of viruses, worms, trojans, and all kinds of malware.
malwr is a free malware execution sandbox that analyzes suspicious files and facilitates the quick detection of malware.
Microsoft Safety Scanner is a free downloadable security tool that provides on-demand scanning.
Wipe Utility Programs
Microsoft Safety Scanner is a free tool that provides on-demand scanning and helps remove viruses, spyware, and other malicious sofwtare. It works with your existing anti-virus software.
DBAN - DBAN is free erasure software designed for the home user. It automatically deletes the contents of any hard disk that it can detect.
Active KillDisk - Powerful and compact software that allows you to destroy all data on hard disks, SSD & USB disks completely, excluding any possibility of future recovery of deleted files and folders.
Eraser - http://www.heidi.ie./eraser/ Eraser is an advanced security tool for Windows which allows you to completely remove sensitive data from your hard drive by overwriting it several times with carefully selected patterns. Works for many older versions of Windows.
Password Strength Meters
Microsoft - Test your passwords to see how strong they are.