So, you want to work in security?
- Cybrary – free online security courses
- Cyber Security Degrees – lists of scholarships, degree programs, and certifications in the USA
- eLearnSecurity – paid online security courses
- ENISA Training Resources – educational resources
- Exploit Database – archive of exploits
- Hacker101 – free, open-source video lessons on web security
- Hacksplaining – vulnerabilities explained simply
- Open Security Training – free, open-source materials for computer security classes
- PortSwigger – free, online web security training with basic and advanced topics and hands-on labs
- SANS – professional paid information security training
- SANS Cyber Aces – video tutorials with handouts and quizzes
- Teaching Security – ready-made materials for classrooms
- picoCTF - a free computer security education program for beginners with original content built on a capture-the-flag framework created by security and privacy experts
- Avatao – challenges to practice cybersecurity skills
- Damn Vulnerable Web Application (DVWA) – a PHP/MySQL web application containing various vulnerabilities
- Exploit Exercises – virtual machines and challenges to practice security exploits
- Hack Me – a community platform for building, hosting and sharing vulnerable web app code
- Hack The Box – a community platform with hacking challenges
- Hack This Site – training ground for hackers including a community forum
- Hack This!! – challenges to practice cryptography, forensics, JavaScript, SQL, and more
- Hacker Test – challenges to practice JavaScript, PHP, HTML and graphic thinking
- Root Me – challenges to practice hacking skills
- Secure Code Warrior – security learning resources and challenges
- Wargames – games for practicing hacking skills
- Awesome Security List – a major list on everything security-related
- Penetration Testing Practice Lab – a roadmap for vulnerable apps and systems
- Practice CTF List – CTF practice sites and tools
- TeachCyber – a list of free online resources
- WeChall – a list of web challenges and practice sites