A Comprehensive Guide to NIST 800-171 R3: Ensuring Compliance with Updated Security Standards

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If you operate a business in Controlled Unclassified Information (CUI), you’re probably familiar with NIST 800-171 standards. If not, then it’s imperative to acquaint yourself with these regulations to avoid potential noncompliance penalties. As the saying goes, ignorance is no defense.

Here’s a comprehensive guide to NIST 800-171 and what it means to comply with these protocols. We shall start by familiarizing ourselves with CUI and then delve into NIST 800-171 before winding up with the standards’ third revision.

What Is Controlled Unclassified Information?

Controlled Unclassified Information, commonly abbreviated as CUI, refers to unclassified information created or possessed by the United States federal government, which must be handled, stored, or disseminated under certain control limits.

While controlled unclassified information is technically publicly available, the sensitive nature of such information requires its prudent handling. It’s imperative to adhere to prescribed measures while distributing CUI to safeguard the financial and security secrets of the U.S. Government.

The CUI program was established by President Barack Obama’s Executive Order 13556. The framework has since expanded to cover several categories, notably defense, law enforcement, national intelligence, and financial sectors. Others are immigration, taxation, and export control.

CUI’s dissemination is typically controlled under NIST 800-171 standards. These protocols were recently revised and will soon be available as NIST 800-171 Revision Three or NIST 800-171 R3. More on that in the subsequent section.

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What Is NIST 800-171?

NIST stands for the National Institute of Standards and Technology. It’s a United States’ federal agency responsible for publishing the protocols necessary to bolster cybersecurity resilience in the public and private sectors.

800-171 is one of NIST’s special publications.

NIST 800-171 is a set of standards that spells out the compliance requirements for non-federal organizations that handle or store Controlled Unclassified Information on behalf of the U.S. government.

As hinted, there are multiple categories of information that fall within the CUI framework. Such documents are typically handled by contractors for the U.S. Department of Defense (DOD), recipients of federal loans and grants, and other entities that provide sensitive services to federal agencies.

NIST 800-171 was published in June 2015. Since then, the federal government has continuously implored CUI handlers to implement the relevant guidelines with a view to attaining regulatory compliance.

NIST 800-171 is administered under 110 requirements, each targeting specific areas within a contractor’s IT ecosystem. The requirements cover a broad spectrum of IT aspects, from access control to authentication protocols, network configurations, etc.

Contrary to what many may think, NIST 800-171 doesn’t require CUI handlers to surrender documents containing such information to the federal government. Instead, it publishes protocols for storing and disseminating information through an organization’s cybersecurity networks.

Federal contractors that handle CUI must adhere to certain best practices to prevent potentially malicious actors from slipping into the hands of such sensitive information, both within and outside their organizational structures.

Organizations must conduct regular assessments of their cybersecurity networks to achieve full NIST 800-171 compliance. CUI contractors must maintain a robust System Security Plan (SSP) and other relevant policies that regulators can quickly analyze to verify compliance. 

It’s also worth noting that NIST 800-171 applies only to the components of a contractor that contains CUI. That explains why the focus is on cyber data storage.

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What Is NIST 800-171 R3?

Since its publication, NIST 800-171 has received several updates. The U.S. government regularly updates existing NIST 800-171 standards in response to emerging cybersecurity threats and technological advancements.

NIST 800-171 R3 is the third and latest revision to NIST 800-171. While still a work in progress, it has already generated considerable interest among many CUI contractors.

One of the expected changes in NIST 800-171’s new revision is increased security requirements.

Remember that NIST 800-171 presently has 110 requirements. However, the proposed revision would have 97 security requirements.

At first glance, the requirements in NIST 800-171 R3 appear to significantly decrease from NIST 800-171 R2. But it’s important to note that NIST 800-171 R3 doesn’t derive directly from NIST 800-171 R2. Instead, it’s based on NIST SP 800-53, whose revision 5 contains 287 security protocols.

While proposing NIST 800-171’s third revision, the U.S. government determined that 156 of the 287 controls in SP 800-53’s revision five apply to handling Controlled Unclassified Information. Therefore, all the protocols are represented in NIST 800-171 R3’s 97 requirements. So, when deeply analyzed, NIST 800-171 R3’s 97 requirements are more elaborate than those in its predecessor – NIST 800-171 R2.

Another noteworthy change to NIST 800-171 R3 will be the introduction of new control families.

Revision three comes with three additional families up from NIST 800-171 R2’s 14, bringing the total to 17. The additional families include Planning (PL), Supply Chain Risk Management (SR), and System and Service Acquisition (SA).

It’s also exciting to know that NFO controls will be conspicuously missing from NIST 800-171 R3.

According to NIST, NFO controls are security controls that can be satisfied by CUI contractors without specification. These protocols were fashioned from NIST SP 800-53 moderate baseline and were labeled NFO. They’ve been omitted from revision three in an apparent move to raise the standards for regulatory compliance. 

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Final Word

Understanding NIST 800-171 guidelines is critical to achieving relevant regulatory compliance for CUI contractors. Hopefully, this article provided you with invaluable insights you need to implement NIST 800-171 R3 standards in your workplace.