
In this series on the Department of Defense’s (“DoD”) proposed Cybersecurity Maturity Model Certification (“CMMC”) rule, we have discussed the rule’s implementation timeline and the basics of CMMC Level 1 and CMMC Level 2. In this post, we discuss the most demanding CMMC level – CMMC Level 3.
What contracts will be subject to CMMC Level 3?
Unlike with CMMC Levels 1 and 2, DoD has not announced specific criteria for when CMMC Level 3 will apply. DoD has only stated that CMMC Level 3 will apply to contracts “supporting its most critical programs and technologies.” We know that CMMC Level 2 will apply to contracts where the contractor will receive Controlled Unclassified Information (“CUI”), so we can probably assume that CMMC Level 3 will, at a minimum, apply to contracts with the most sensitive CUI. DoD estimates that less than 1% of defense contractors will obtain a CMMC Level 3 verification once the rule has gone into full effect, which suggests that relatively few contracts will require CMMC Level 3 certification.
What are the requirements of CMMC Level 3?
There are three steps the contractor must satisfy to obtain a CMMC Level 3 certification. First, the contractor must obtain a CMMC Level 2 certification. This means that a Certified Third-Party Assessor Organization (“C3PAO”) will need to assess any contractor information system that stores, processes, or transmits CUI for compliance with the NIST SP 800-171 rev. 2 security requirements. Note that because the proposed CMMC rule requires a CMMC Level 2 certification—a third party assessment—a CMMC Level 2 self-assessment will not suffice.
Continue reading “Understanding the Basics of CMMC Level 3”


