Notifications
Clear all
Topic starter
08/07/2026 7:00 pm
TL;DR: CMMC 2.0 shifts file auditing from a logging task to evidence of controlled access across the defence supply chain, with Level 1 self-assessments, Level 2 third-party assessments every three years, and Level 3 government-led assessments aligned to NIST 800-53 and NIST-800-171, according to IS Decisions. The governance test is no longer whether access is visible, but whether logs are complete, centralised, tamper-resistant, and reviewable enough to support proof.
NHIMG editorial — based on content published by IS Decisions: CMMC 2.0 compliance and the role of file auditing
By the numbers:
- Starting in November 2025, any organization bidding for contracts through or connected to the U.S. DoD supply chain must comply with CMMC 2.0.
Questions worth separating out
Q: How should teams prove file access control for CMMC assessments?
A: They should produce a central, tamper-resistant audit trail that shows who accessed files, what actions they took, and when those actions occurred.
Q: Why do native file auditing tools often fail compliance review?
A: They usually fail because they create too much manual work, miss hybrid storage coverage, and lack centralized reporting.
Q: What breaks when file audit logs are fragmented across systems?
A: Fragmented logs create blind spots, make evidence harder to trust, and slow down review during assessments or incidents.
Practitioner guidance
- Map file systems to assessment scope Identify which repositories, cloud platforms, and endpoints fall under CMMC expectations, then verify that access events are captured consistently across all of them.
- Centralise logs before the next assessment cycle Move away from tool-by-tool review and ensure audit data is aggregated into one place where it can be searched, retained, and protected from tampering.
- Filter for high-signal access patterns Use identity, device, executable, and time filters to focus reviews on unusual reads, writes, deletions, and denied access events rather than raw event volume.
What's in the full article
IS Decisions' full article covers the operational detail this post intentionally leaves for the source:
- Step-by-step explanation of how FileAudit maps access events to CMMC 2.0 requirements
- Platform coverage details for OneDrive, SharePoint, Google Drive, Dropbox Business, and Box
- Examples of alerting, reporting, and retention settings for audit-ready file governance
- Interface walkthrough of the Audit, Reports, and Tools panes for daily administration
👉 Read IS Decisions' guidance on FileAudit and CMMC 2.0 compliance →
CMMC 2.0 file auditing: can your access logs prove compliance?
Explore further
08/07/2026 7:23 pm
CMMC converts file auditing from operational telemetry into compliance evidence. The framework is designed around proof, not intent, which means access logs have to be complete enough to answer assessor questions about who touched sensitive files and whether that access was acceptable. This is the point where many programmes discover that visibility and evidentiary quality are not the same thing. For practitioners, file auditing now sits at the intersection of IAM, PAM, and audit readiness.
A few things that frame the scale:
- 72% of organisations have experienced or suspect they have experienced a breach of non-human identities, according to The 2024 ESG Report: Managing Non-Human Identities.
- The same research found that enterprises that have experienced a compromised NHI averaged 2.7 separate incidents in the past 12 months.
A question worth separating out:
Q: Who is accountable when file access evidence cannot be produced?
A: Accountability sits with the organisation holding the contract or pursuing it, because CMMC is a supply-chain requirement, not a tool-specific one. Security, IAM, and compliance teams must be able to demonstrate that file access controls were implemented and that the resulting evidence is defensible.
👉 Read our full editorial: CMMC 2.0 turns file auditing into proof of access control
