Web Security (OWASP Top 10:2025)
The planned outline of 17 modules. Lessons are written, run and reviewed before they are published.
Planned outline
- Module 1
Foundations: the web, standards and threat thinking
Coming soon - Module 2
A01:2025 Broken Access Control
Coming soon - Module 3
A02:2025 Security Misconfiguration
Coming soon - Module 4
A03:2025 Software Supply Chain Failures
Coming soon - Module 5
A04:2025 Cryptographic Failures
Coming soon - Module 6
A05:2025 Injection
Coming soon - Module 7
A06:2025 Insecure Design
Coming soon - Module 8
A07:2025 Authentication Failures
Coming soon - Module 9
A08:2025 Software or Data Integrity Failures
Coming soon - Module 10
A09:2025 Security Logging and Alerting Failures
Coming soon - Module 11
A10:2025 Mishandling of Exceptional Conditions
Coming soon - Module 12
APIs, WebSockets and GraphQL (OWASP API Security Top 10:2023)
Coming soon - Module 13
Enterprise SSO and provisioning (SAML 2.0 and SCIM 2.0)
Coming soon - Module 14
LLM features (OWASP Top 10 for LLM Applications 2026)
Coming soon - Module 15
Security testing and OWASP ZAP in CI
Coming soon - Module 16
Vulnerability disclosure and CERT-In reporting
Coming soon - Module 17
Secure code review and routine
Coming soon
Related tools
Content Security Policy (CSP) Generator Build a strict, working CSP with hashes, reporting and ready-to-paste server config. Security Headers Checker Grade a site’s security headers A+ to F and get copy-paste fixes for your server. JWT Decoder Read any JWT and check its signature — without sending the token anywhere. Bcrypt Hash Generator & Verifier Create and verify bcrypt hashes in your browser, with timing and the 72-byte check. Hash Generator Hashes and HMACs of text or huge files, plus checksum verification.
Official documentation
- owasp.org/Top10/2025 (owasp.org)
- cheatsheetseries.owasp.org (cheatsheetseries.owasp.org)
- developer.mozilla.org/en-US/docs/Web/HTTP/Guides/CSP (developer.mozilla.org)
- www.rfc-editor.org/rfc/rfc9700.html (rfc-editor.org)
- owasp.org/www-project-application-security-verification-standard (owasp.org)
- docs.oasis-open.org/security/saml/v2.0/saml-profiles-2.0-os.pdf (docs.oasis-open.org)
- www.rfc-editor.org/rfc/rfc7644.html (rfc-editor.org)
More in Security
- Cybersecurity Foundations (coming soon)
- Applied Cryptography for Developers (coming soon)
- All Security tracks
- How we make lessons