Official repository for the OWASP Top 10 document, a ranked list of the most critical web application security risks.
Application Security Verification Standard
Vulnerable app with examples showing how to not use secrets
OWASP Community Pages are a place where OWASP can accept community contributions for security-related content.
OWASP Foundation main site repository
The Web Security Testing Guide (WSTG) Project produces the premier cybersecurity testing resource for web application developers and security professionals.
See why a web vulnerability works, not just how to trigger it — a single-file, zero-dependency security lab that renders a vulnerable app as a 7-layer cross-section. 17 labs, attacker & defender modes, AI-authorable.