Blog · Field Notes From the Boundary

CMMC, decoded by people who passed it.

Practitioner articles on CMMC Level 2, NIST SP 800-171, SPRS scoring, GCC High, and the Microsoft security stack — written by the team that holds the certification it helps clients earn.

Latest articles

SPRS & Scoring

Your SPRS Score, Explained: Why It Runs From −203 to 110

How 110 controls become one number, why most first scores are negative, and which gaps to close first.

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CUI Fundamentals

What Actually Counts as CUI? (And What Doesn't.)

FCI vs. CUI Basic vs. CUI Specified — and why overmarking quietly inflates your boundary and your budget.

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Microsoft 365

GCC High vs. Commercial M365: Who Actually Needs to Migrate

The contract-driven decision, the ITAR trigger, and the enclave alternative that migrates fewer seats.

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Budget & Planning

What CMMC Level 2 Really Costs — and Where the Money Goes

The honest cost stack from discovery to assessment, and why scope — not tooling — is the biggest lever.

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Documentation

No SSP, No Score: The Document That Gates Everything

Why 3.12.4 carries no point value, what a real System Security Plan contains, and how assessors test it.

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Assessment Rules

POA&Ms Under CMMC: What Can Stay Open at Assessment

The 88-point floor, 1-point items only, and the 180-day closeout clock. The old escape hatch is gone.

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Assessment Prep

Inside a C3PAO Assessment: What Assessors Actually Test

320 objectives, three evidence methods, one anchor document — and why booking lead time matters.

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Choosing a Partner

Choosing an MSP for CMMC: The Shared-Responsibility Questions That Matter

Your MSP is inside your assessment whether they like it or not. Here's how to pick one who knows it.

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Microsoft Security Stack

Mapping the Microsoft Security Stack to NIST SP 800-171

Entra, Intune, Defender, Sentinel, Purview — what each actually covers, and what no license buys you.

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Incident Response

The 72-Hour Clock: DFARS Incident Reporting Nobody Practices

Medium assurance certificates, DIBNet, 90-day preservation — the mechanics to sort out before you need them.

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From the archive

Long-form guides