16 Hacking Websites & forums - Underground hacker sites

1. SecurityFocus: Provides security information to all members of the security community, from end users, security hobbyists and network administrators to security consultants, IT Managers, CIOs and CSOs.
2. Exploit DB: An archive of exploits and vulnerable software by Offensive Security. The site collects exploits from submissions and mailing lists and concentrates them in a single database.
3. Hacked Gadgets: A resource for DIY project documentation as well as general gadget and technology news.
4. SecTools.Org: List of 75 security tools based on a 2003 vote by hackers.
5. Black Hat: The Black Hat Briefings have become the biggest and the most important security conference series in the world by sticking to our core value: serving the information security community by delivering timely, actionable security information in a friendly, vendor-neutral environment.
6. The Hacker News: The Hacker News — most trusted and widely-acknowledged online cyber security news magazine with in-depth technical coverage for cybersecurity.
7. Hakin9: E-magazine offering in-depth looks at both attack and defense techniques and concentrates on difficult technical issues.
8. Offensive Security Training: Developers of Kali Linux and Exploit DB, and the creators of the Metasploit Unleashed and Penetration Testing with Kali Linux course.
9. DEFCON: Information about the largest annual hacker convention in the US, including past speeches, video, archives, and updates on the next upcoming show as well as links and other details.
10. HackRead: HackRead is a News Platform that centers on InfoSec, Cyber Crime, Privacy, Surveillance, and Hacking News with full-scale reviews on Social Media Platforms.
11. Hack Forums: Emphasis on white hat, with categories for hacking, coding and computer security.
12. KitPloit: Leading source of Security Tools, Hacking Tools, CyberSecurity and Network Security.
13. Packet Storm: Information Security Services, News, Files, Tools, Exploits, Advisories and Whitepapers.
14. Phrack Magazine: Digital hacking magazine.
15. NFOHump: Offers up-to-date .NFO files and reviews on the latest pirate software releases.
16. Metasploit: Find security issues, verify vulnerability mitigations & manage security assessments with Metasploit. Get the worlds best penetration testing software now.