The Audit Defense Library

Practitioner-depth analysis across federal and private compliance: FISMA and NIST RMF, FedRAMP, CMMC, federal AI governance, SOC 2, AI governance, cybersecurity, and GRC engineering. Written by a CPA, CISSP, CISA with Big 4 audit experience.

All FISMA & NIST RMF FedRAMP CMMC Federal AI Governance GovCon Compliance Federal Cybersecurity Federal Zero Trust Federal GRC Engineering AI Governance GRC Engineering Cybersecurity Cloud Security HIPAA SOC 2
Federal AI Governance

High-Impact AI Classification: The Federal Risk Assessment Framework Under M-25-21

How many of your agency's AI systems qualify for high-impact AI classification under OMB M-25-21? Not the number you reported in last year's use case inventory under M-24-10. The number that actually qualifies today, under...

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Federal AI Governance

OMB M-25-21 Compliance Guide: The New Federal AI Governance Framework

The conventional take on Office of Management and Budget (OMB) M-25-21 is that the Trump administration ripped out the Biden-era guardrails and told agencies to move fast. That reading is wrong, and acting on it...

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CMMC

CMMC Level 2 Assessment Preparation: The 90-Day Readiness Sprint

The email arrives on a Tuesday. Your contracting officer has forwarded a notice: the new contract includes Defense Federal Acquisition Regulation Supplement (DFARS) 252.204-7021, and the performance period begins in four months. You need Cybersecurity...

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GovCon Compliance

SAM.gov Registration Guide 2026: Step-by-Step for New Government Contractors

The email arrived on a Tuesday afternoon. A federal contracting opportunity worth $340,000, perfect fit for the work the business had been doing for three years. The owner spent a weekend drafting the proposal, assembled...

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DCAA Audit Readiness

FAR Part 31 Allowable Costs: The Definitive Guide for Government Contractors

The notification arrived on a Tuesday. A Defense Contract Audit Agency (DCAA) auditor was on-site, reviewing overhead pool charges for the prior fiscal year. By Wednesday afternoon, the auditor had flagged $47,000 in entertainment expenses...

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Federal GRC Engineering

OSCAL Explained: The Machine-Readable Compliance Standard Reshaping Federal GRC

Federal compliance documentation practice has not changed materially in twenty years: security professionals write System Security Plans (SSPs) by hand, auditors read them by eye, and agencies process authorization packages the same way they processed...

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CMMC

SPRS Score Explained: How to Calculate and Improve Your DoD Compliance Score

What is your Supplier Performance Risk System (SPRS) score right now? Not the score you submitted. The score that reflects your actual implementation status today, measured against the 110 controls in NIST SP 800-171 Rev...

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CMMC

CMMC Enclave Architecture: Scoping Your CUI Environment to Minimize Assessment Cost

The following is an illustrative composite drawn from current CMMC assessment market conditions. Contractor A had 340 workstations, four office locations, a shared IT environment spanning HR, finance, and engineering, and a standard enterprise network...

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FedRAMP

FedRAMP 20x: What Changes for Cloud Service Providers in 2026

FedRAMP has been running essentially the same authorization process for fifteen years. Cloud service providers submit narrative security packages, assessors review documentation, the Program Management Office (PMO) validates controls, and an agency issues an Authorization...

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FedRAMP

RFC-0024 Machine-Readable Compliance: FedRAMP’s Phased OSCAL Deadline Guide

In 2025, FedRAMP processed more than 100 Rev5 authorizations without a single Open Security Controls Assessment Language (OSCAL) submission, a figure RFC-0024 itself cites in its background section to justify the machine-readable mandate (FedRAMP RFC-0024,...

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DCAA Audit Readiness

DCAA Audit Readiness Checklist: The Small Contractor’s Compliance Guide

Most small contractors fail Defense Contract Audit Agency (DCAA) audits before the auditor walks through the door. The accounting system was never designed for government contracting. Time gets recorded in lump sums at the end...

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FISMA & NIST RMF

NIST RMF Step-by-Step: The 7-Step Implementation Guide for Federal Systems

Every federal agency that failed an authorization review in the past three years has something in common. The finding is rarely about a missing firewall rule or an unpatched server. The finding is about a...

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The Authority Brief

One compliance analysis per week from Josef Kamara, CPA, CISSP, CISA. Federal and private compliance, written for practitioners.