Security related sites

Link	Description
GFI Security Labs	Here you can read the latest about new virus threats, try harmless but effective security tests online, access up-to-date information about email and network security, and more.
Magaf's weblog	Nice info about exploits and encryption (and much more).
Microsoft Security Bulletin Search	Find Hotfixes and Security Updates released by Microsoft.
Netcraft	UK-based company that's providing network security services, including application testing, code reviews, and automated penetration testing. Has many interesting articles and tools.
Packet Storm	Packet Storm offers an abundant resource of up-to-date and historical security tools, exploits, and advisories.
SecurityFocus	"SecurityFocus is the most comprehensive and trusted source of security information on the Internet." I tend to agree.
Trend Micro HouseCall Online Anti-Virus	One of the best online Anti-Virus scanners. Trend Micro HouseCall is the only free online virus scanner on the market that supports multiple Operating Systems and multiple Browser architectures.
Windows (security) Resources	A very large list of links to security-related sites. Nice to have.