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- Awesome-Hacking Lists
- Annie's eBooks
- Zempirian eBooks
- Citadel Database
- Crack Station
- Exploit Database
- Hack this Site
- Hash Generator
- Hell Bound Hackers
- How to delete your reddit history
- Packet Storm Security
- Phrack Ezine
- Security Book Reviews
- Security Tubes
- Skull Security
- Smash the Stack
- Sploit Me
- https://www.vulnhub.com/ has a lot of VMs to play with. some are beginner friendly, some aren't.
- http://www.itsecgames.com/ - buggy web app
- http://www.dvwa.co.uk/ - Damn Vulnerable Web Application
- metasploitable2 is good, but old.
- metasploitable3 is good, but complicated to setup.
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We teach you how to do it, use it at your own risk.