13 Jul 2026CMMC Phase II suspended: no C3PAO assessments can be designated. DFARS 7012 and Rev 2 still apply.What changed, and what did not →
MacZine
The MacTech Solutions Newsletter
Topic · 11 articles

DFARS

Every MacZine article on DFARS, newest first - written, reviewed and versioned in the open.

046Issue Nº

Subcontractor Cybersecurity: Your Sub's SPRS Score Is a Claim

Primes cannot see a sub's score in SPRS. Subcontractor cybersecurity requirements get verified with evidence - here is what to ask for.

September 30, 2026
039Issue Nº

An Incident Response Tabletop Exercise That Satisfies 3.6.3

An incident response tabletop exercise counts for NIST 800-171 3.6.3 only if it leaves evidence. How to seat, script, and document one an assessor accepts.

September 21, 2026
036Issue Nº

NIST 800-171 Rev 3 vs Rev 2: It Depends Who Signed the Contract

NIST 800-171 Rev 3 vs Rev 2: DoD still binds and scores Rev 2 while civilian CUI heads to Rev 3. What changed, the ID trap, and how to map once.

September 16, 2026
035Issue Nº

CMMC Class Deviation: The Phase 2 Pause Is Now in the Rulebook

The CMMC class deviation moved the Phase 2 pause from a policy memo into DFARS. A dated timeline of what each step changed, and what stays in force.

September 15, 2026
031Issue Nº

What Actually Makes a File CUI

CUI is a government designation, not a judgment you make on a file's contents. How marking, derivative marking, and decontrol actually work.

September 1, 2026
030Issue Nº

Read the Solicitation's Compliance Clauses Before You Bid

Compliance cost gets decided at bid or no-bid, not after award. A front-to-back read of the clauses, DD-254, and Section L/M that actually price it.

August 31, 2026
022Issue Nº

Can You Put CUI in an AI Tool? Read the Cloud Clause First

The DFARS clause that governs cloud service providers already answers whether CUI can go into an AI tool - most of the commercial tier fails it.

August 19, 2026
011Issue Nº

The 72-Hour Clock in DFARS 252.204-7012, Hour by Hour

DFARS 7012 gives you 72 hours to report a cyber incident to DoD. Walking the clock hour by hour shows where contractors actually lose the time.

August 5, 2026
008Issue Nº

How Your SPRS Score Is Actually Calculated

The DoD Assessment Methodology scores 110 controls on a 5/3/1 weighting and bottoms out at -203. Here is the arithmetic, and how a CO reads it.

July 31, 2026
007Issue Nº

DoD Paused CMMC Phase 2. Your Subcontract Flow-Down Didn't.

DoD suspended CMMC Phase 2's federal clause, but a prime's subcontract requirement is a separate instrument - and it doesn't lift itself.

July 30, 2026
005Issue Nº

CMMC Phase 2 Is Paused. Your Compliance Clock Isn't.

DoD paused CMMC Phase 2 certification to review the program - the DFARS and NIST 800-171 obligations under it did not. What to do during the review.

July 28, 2026