Free Resources

Cybersecurity Resources

Curated links to free, authoritative cybersecurity resources — organized by category.

New · Practitioner Field Guide

Writing Agent Guardrails with Ordinance

A practitioner's framework for policies that actually constrain an AI agent — and deploying them safely, with audit evidence, in CMMC / NIST 800-171 / CUI environments.

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Phaethon Guides

In-depth guides from our team

CMMC Audit Logging & Evidence: A Small Contractor's Guide (2026)

How small DIB contractors satisfy CMMC Level 2 audit logging and evidence — without shipping CUI to the cloud or standing up Splunk.

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What Evidence Does a C3PAO Actually Ask For?

How CMMC Level 2 assessors gather evidence — Examine, Interview, and Test — and how to prepare a package that holds up.

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Audit Log Retention for CMMC & NIST 800-171: How Long, and Why

What the requirements actually say about retention, the 90-day DFARS incident rule, and how to protect and review logs so they hold up at assessment.

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