Security Sites

Offensive Security : Offensive Security is an Online Information Security Training and the guys behind Kali Linux
Social Engineering - Security Through Education: The Official Website of the Social Engineering Framework(Art Of Human Hacking).
Metasploit Unleashed By Offensive Security: The free online version of the course for Metasploit
THN (The Hacker News): The Hackers News is an online Hacker News Organisation that propagates news specifically related to information security threats, hacking threads and issues from all over the world.
SecLists.Org: Internet Security Resource Website that gives full disclosure.
SoldierX: No body can stop information dissemination.
SANS Internet Storm Center: SANS Internet Storm Center is a Cooperative Network Security Community
Schneier on Security: Bruce Schneier's Website about Information Security
Infocon: massive repository of all hacking conference content.
DEF CON: Official website of the world's largest hacking conference in the world.
Hackaday: The world's largest collaborative hardware slash the hardware hacking development community.
Toolswatch: Hacker's Arsenal Portal

Security Blogs

GFI LABS Blog: The GFI LABS Blog featuring Christopher "paperghost" Boyd
Project Zero Blog: News and updates from the Project Zero team at Google
ROOTCON Blog: ROOTCON's blog about hacking, tools and updates on it's events.
Darknet : The Darkside | Ethical Hacking, Penetration Testing and Computer Security
F-Secure Weblog: F-Secure Security Labs brings you the latest online security news from around the world. Ensure that you are up-to-date with the latest online threats to guarantee your online wellbeing
McAfee's Blog: McAfee Antivirus Company Labs | Blog Central
Command Line Kung Fu: This blog includes fun, useful, interesting, security related, non-security related, tips, and tricks associated with the command line.
Cyber Security Video Podcast: The home page for the Cyber Security video podcast series by Cyber Mike.
Technicia Blog: This Blog is all about the latest activities in the TECH WORLD.
TECHNOFREAKS: Prajwal Panchmahalkar's Blog. He is A Security Professional, Hacker, Designer, and a Programmer.
Finux Tech Weekly - (Podcast): Arron Finnon's (aka finux) blog that ventures into his own independent podcast about Tech, Security and general geekyness.
Exploit This: A wordpress blog about the latest in security news, current exploits and vulnerabilities
Security Bloggers Network: The Security Bloggers Network is one of the largest collection of information security focused blogs and podcasts in the world.
The Ashimmy Blog: Writings on work, kids and network security
Daniel Miessler's Blog: A blog about information security and technology by a known infosec professional, Daniel Miessler
Security Affairs: A blog about infosec, cyberwarfare, hacking and technology maintained by Pierluigi Paganini
IOActive Labs: Insights, news, and discoveries from IOActive Researchers a.k.a Hackers
Bugcrowd's Blog: A blog maintained by Bugcrowd which is a crowdsource security platform

Vulnerability Sites

SecurityFocus: The SecurityFocus website focuses on a few key areas that are of greatest importance to the security community like archiving vulnerabilities.
US-CERT: The US-CERT Current Activity web page is a regularly updated summary of the most frequent, high-impact types of security incidents currently being reported to the US-CERT.
CVE: CVE is a dictionary of publicly known information security vulnerabilities and exposures.
Security Tracker: Keep Track of the Latest Vulnerabilities with SecurityTracker!
Rapid 7 Vulnerability & Exploit Database: Reference for current exploits, vulnerabilities and metasploit modules.
Exploit-DB: Offensive Security’s Exploit Database Archive which is an ultimate archive of Exploits, Shellcode, and Security Papers.
Computer Security Vulnerabilities: Computer Security Vulnerabilities and Exploits Database