Security Architecture,
Open Source

Reusable security patterns, control mappings, and capability models that help you design proportionate, consistent, and traceable security — across every system in your estate. Trusted by security architects in 190+ countries since 2008.

54
Security Patterns
315
NIST Controls
87
Framework Mappings
17+
Years Active

How Mature Is Your Security Architecture?

Assess your organisation against OSA patterns. Get a maturity score, radar chart visualisation, gap analysis, and see how you compare to industry benchmarks — all free, all encrypted client-side with AES-256-GCM. We cannot read your scores.

Free Policy Templates

NIST-mapped, concise, and modern — covering AI, cloud, BYOD, and remote work. Download in Markdown format, free for registered users.

Open Source, Open Standards

All OSA content is released under CC BY-SA 4.0. Use it in your security architecture practice, contribute improvements, or build tools on top of our structured data.

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