About OWASP Cheat Sheet Series
Practical security guidance
The OWASP Cheat Sheet Series is a community-maintained collection of concise, actionable guidance on specific application security topics. It is written for developers and defenders who need advice they can apply in real projects. Read and reference the published cheat sheets on the official website; the Markdown files in GitHub are the working sources.
Mapped to OWASP standards
The repository includes dedicated indexes that connect relevant cheat sheets to OWASP ASVS, OWASP MASVS, the OWASP Top 10, and OWASP Top Ten Proactive Controls. These mappings help teams move from security requirements and risk categories to focused implementation guidance.
Contribute and connect
The project welcomes contributions large and small. Improve wording, work on an approved issue, or propose an enhancement after reading the contribution guide and writing guideline. For questions and ideas, join the OWASP Slack workspace and the #cheatsheets channel.
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