The OWASP Top 10, Explained

What OWASP and the Top 10 actually are - a shared checklist and vocabulary for the most common, most damaging ways web apps get broken into, and how to use it without fooling yourself into a false sense of security.

1. What OWASP & the Top 10 Are OWASP is a nonprofit; the Top 10 is its periodically-updated list of the most common and impactful categories of web application security risk - a shared checklist and vocabulary, not a tool or a standard you install.
2. The Big Categories, in Plain English A plain-English walk through the major recurring OWASP categories - Broken Access Control, Injection, Cryptographic Failures, Auth failures, Security Misconfiguration, Vulnerable Components, SSRF, and Insecure Design - each with a one-line 'what it is + the fix.'
3. How to Actually Use It The OWASP Top 10 is a checklist, not a guarantee - thread it into design, code review, and dependency updates, lean on defense in depth, and never treat 'we checked it once' as 'we're secure.'