Organizations that do business with the federal government often are acquiring, processing, storing, and sharing sensitive data. In some cases, the information is not considered government classified, and yet requires protection against misuse, inappropriate access, loss, or theft. PK Protect simplifies compliance with NIST 800-171 and CMMC requirements as well as other government and industry mandates and regulations.
Two Different Things, Often Confused
NIST is a non-regulatory federal agency, founded in 1901 within the Department of Commerce, that publishes standards. The Cybersecurity Maturity Model Certification is run by the Department of Defense and is concerned specifically with protecting sensitive data across the defense supply chain.
One writes the standard; the other assesses whether a contractor meets it. The distinction matters because compliance with the publication is self-asserted while certification is verified by someone else.
What NIST 800-171 Covers
Special Publication 800-171 sets standards for the security and confidentiality of Controlled Unclassified Information. It applies when CUI is shared outside federal systems and agencies, and where no specific law, policy or regulation already governs that category.
That is the ordinary case for a contractor. The information is not classified, it still requires protection against misuse, inappropriate access, loss or theft, and the obligation follows the data into the contractor’s own systems.
What CMMC Measures
CMMC assesses how well vendors and their supply chains protect both Controlled Unclassified Information and Federal Contract Information. The scope is the reason it reaches further than a single company’s security program.
A prime contractor’s maturity is limited by the subcontractors it shares data with, which makes the question not only what an organization does but what it can demonstrate about everyone it passes CUI to.
What a Compliant Program Actually Does
Policies are defined centrally, covering discovery, indexing, identity creation, classification and protection, and then enforced by agents rather than by instruction.
Endpoint agents monitor file activity on laptops, desktops and servers. Repository scanning covers cloud and on-premises environments. New and modified files are examined at the element level, which is what catches CUI arriving inside a document that was not itself classified.
What follows is a policy decision per finding: index it, classify it, encrypt it, mask it, redact it, move it or delete it. Having all seven available is what allows the response to match the data rather than the tool.
Why Element-Level Scanning Matters Here
CUI rarely arrives labelled. It appears as a paragraph inside a report, a figure in a spreadsheet, a drawing attached to an email thread about something else.
A control that classifies whole documents will miss most of it, and a contractor that cannot demonstrate otherwise carries an assessment risk it cannot see. Scanning at the element level is what makes the claim of coverage checkable.
The Context Behind the Standard
NIST’s work underpins roughly 80 percent of the measurement-related standards in global trade, which is why its publications carry weight well outside the agencies required to follow them.
Its contributions span strong encryption, the Cybersecurity Framework, industrial control systems, advanced manufacturing, forensic science and infrastructure resilience. Treating 800-171 as a defense-sector obligation understates how widely the same standards end up applied.
The practical consequence for a contractor is that investment in 800-171 controls rarely serves only one contract. The same discovery, classification and protection capability answers commercial customer security questionnaires and cyber insurance applications alike.