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Step 1 For CMMC Certification: Understanding Your CUI & CMMC Level

Written by Mira Aslanova | April 10, 2025

Now that the Department of Defense (DoD) has adopted the CMMC 2.0 Final Rule, you may be wondering how to even get started to become compliant with the revamped regulatory requirements.

If you’re a prime or subcontractor within the U.S. defense industrial base (DIB), you’re well aware of the Cybersecurity Maturity Model Certification (CMMC) program.

The regulation implements accountability guardrails for protecting sensitive federal information within the DIB.

The intent of the new regulation is to verify that companies have put in place the required security measures to protect sensitive information within the defense supply chain.

If you’re a small or medium-sized business needing CMMC certification and your compliance efforts have stalled or haven’t even gotten into gear—don’t worry, you’re not alone!

In this article, we’ll discuss the types of federal information you're responsible for protecting and where it could reside within your IT environment. Then, we'll help you determine your CMMC level as part of the critical first step in your CMMC journey 

With this information, you’ll have a complete understanding of what’s involved in undertaking the first phase in the CMMC process and how it establishes an essential foundation toward final certification. 

Understanding The Sensitive Federal Information You May Handle

What is FCI and CUI?

Under the CMMC 2.0, businesses that collect, create, receive, or transfer controlled unclassified information (CUI) or federal contract information (FCI) will need to meet the cybersecurity assessment requirements of one of three CMMC compliance levels.

Those levels are: Level 1 (Foundational), Level 2 (Advanced), and Level 3 (Expert). Both FCI and CUI involve sensitive federal information that require certain safeguards.

Organizations at Level 1 deal with FCI; while businesses at Level 2 and Level 3 can handle FCI and CUI.

Related Article: CMMC Rule Approved: Next Steps For Compliance

FCI is information that is “not intended for public release” that is owned by or created for the federal government through a contract to deliver a product or service. Since it’s less sensitive, this type of information requires fewer controls.

FCI can be found in different places such as: the contracts themselves, proposal responses, contract progress reports, emails, subcontracts, notes, and other communications. FCI requires basic cyber hygiene safeguards.

CUI is more complicated. Here’s a simple breakdown of what it is.

CUI is a broad umbrella for highly sensitive but unclassified federal information. It includes data that’s created, collected, or shared by or on behalf of the DoD, such as financial, legal, privacy, and procurement information.

An example of CUI is Controlled Technical Information (CTI), which includes technical specifications, engineering drawings, design analysis, data sets, and blueprints.

Keep in mind that CUI is a control marking, not a classification marking. It lets anyone  receiving, storing, or sharing such data instantly know that the information requires additional protections for how it can be handled and with whom it can be shared.

The government is responsible for marking (labeling) any CUI it shares with contractors. Such markings can be found in the headers and footers of each page.

There are specific controls for handling and sharing CUI that must be followed.

Businesses that fail to achieve CMMC certification could jeopardize their existing DoD contract or be prevented from being awarded new ones.

Related Article: What Will The CMMC Certification Process Cost My Business?

Understanding CUI: How It Affects Your CMMC Level

There are two types of CUI: Basic and Specified.

CUI Specified information requires a higher level of safeguards than CUI Basic. An example of CUI Specified data could be a defense supplier working on a military contract and handling technical specs for an aircraft or a submarine, for instance.

What this means for you as part of the DIB supplier network is that you’ll be required to show how you’re meeting the required security controls for the CUI you handle and share.

CMMC establishes assessments at three levels, with cybersecurity requirements that build upon each level. 

Let’s break these levels down: 

CMMC Level 1: Foundational level

  • Basic cyber hygiene for FCI, following 17 practices adopted from the Federal Acquisition Regulation (FAR) clause 52.204-21

  • After security requirement implementation, requires an annual self-assessment to verify the implementation and score; scores must be affirmed after each assessment and entered into the Supplier Performance Risk System (SPRS)

Related Article: How Zero Trust Can Streamline NIST & CMMC Compliance For Your Business

CMMC Level 2: Advanced level

  • Required for organizations handling  FCI and CUI; consists of 110 security practices found in NIST 800-171

  • Most Level 2 contractors must pass a certified third-party assessment (C3PAO) every three years

  • A small number of Level 2 contractors will be allowed to obtain a Level 2 certification through a triennial self-assessment, depending on their contract

  • Annual compliance affirmation is required to verify continued compliance

CMMC Level 3: Expert level

  • For organizations handling high priority DoD projects and more critical CUI

  • Must satisfy the 110 Level 2 NIST SP 800-171 practices, plus select security requirements taken from NIST SP 800-172

  • Must have a federal assessment performed every three years through the defense industrial base cybersecurity assessment center (DIBCAC)

  • Annual compliance affirmation is required to verify continued compliance

4 Steps To Getting Started With CMMC Compliance

According to online information from the DoD’s Chief Information Officer, CMMC Level 2 self-assessments became operational in the SPRS portal as of February. 28, 2025.

You should also know that even though the government has said it plans a phased-in rollout of the regulation requirements, they could impose those requirements on certain contracts ahead of the published schedule.

So, to ensure that you start your compliance efforts off on the right foot, follow the following guidelines: 

Step 1: What level of CMMC certification are you required to meet? 

Since the CMMC levels are segmented by data type, identifying your CMMC level based on the type of federal information you handle will lay the foundation for your CMMC journey.

With this knowledge, you can tailor your security efforts and budget to meet the specific requirements for that certification level.

  • CMMC Level 1 only deals with FCI and requires basic safeguarding controls

  • CMMC Level 2 and Level 3 both deal with CUI, but have stronger compliance requirements (see information above)
Step 2: What kind of CUI are you handling?

If you handle CUI, now’s the time to ask yourself: What kind of CUI am I handling? Knowing the type of CUI your organization creates, processes, or transmits will directly impact the cybersecurity controls you need to implement.

All categories of CUI fall under one of two types: CUI Basic and CUI Specified. 

If you're dealing with CUI Specified, you’ll need to implement more stringent security measures. These might include:

  • enhanced encryption
  • stronger access controls
  • advanced network monitoring systems
  • limited dissemination controls

If you’re not sure of which type of CUI you will be responsible for protecting, you can:

  • Check the DoD's CUI Registry or the CUI Registry of the National Archives and Records Administration (NARA)

  • If you’re a prime, refer back to your DoD contract(s) and look for any Defense Federal Acquisition Regulation Supplement clauses. DFARS deals specifically with safeguarding CUI within the DIB

  • For subcontractors, discuss with your prime contractor which specific data they'll be flowing down to you to fulfill the contract

  • Under certain circumstances, you may also contact the contracting agency's CUI program office for further clarification

Related Article: Do I Need A Managed IT Service Provider To Meet CMMC Requirements?

Step 3: Where is Your CUI Stored?

Next, figure out where your CUI is stored. This will determine the boundaries of your CMMC assessment, or scope. Remember, your entire organization does NOT need to get assessed.

Instead, you can narrow the focus to only the targeted areas of your business that process, store, or transmit CUI. This could be in various locations within your infrastructure, such as:

  • Physical files: Do you store CUI in hard copies or filing cabinets?

  • Servers: Is your data stored on local servers?

  • Cloud environments: Many organizations store data using cloud services, which need to be FedRAMP approved if they are being used to handle CUI data.

  • Mobile devices: If your employees access CUI on laptops, tablets, or smartphones, these devices should be secured as well.  
Step 4: Have You Submitted Your SPRS Score?

Before moving forward, a critical step is submitting your Supplier Performance Risk System (SPRS) score.

Your SPRS score is a numerical score that reflects your current compliance status in meeting the CMMC requirements for your level.

Since the score gives you a baseline to measure your current security safeguards stack up against the regulation, it’s a critical part of your certification journey.

Submitting your SPRS score allows you to:

  • Identify security gaps

  • Understand areas that need improvement before your CMMC assessment

  • Create a clear roadmap to compliance

Keep in mind that when choosing between different subcontractors, primes may require them to have met a minimum SPRS score in order to be considered.

Why Determining Your CUI And CMMC Level Is Crucial For Certification

So, why is it so important to kick off your CMMC certification process by figuring out the kind of CUI you have, where it’s located, and what your CMMC level is?

The answer is simple.

You won’t be able to know what security policies, tools, and procedures to put in place to meet the necessary CMMC requirements if you don’t fully understand the data you’re required to project.

Getting started with this foundation will help ensure that nothing falls through the cracks, which could lead to costly delays. 

The Bottom Line With Getting Started Now On Your CMMC Certification Journey

After reading this article, you now have a more thorough understanding of the first step toward CMMC certification. 

With CMMC language beginning to appear in DoD contracts, now’s the time to take action.

Preparing for and getting CMMC certified can take anywhere from several months to a year or more, depending on the complexity of your data and business infrastructure.

If you need help identifying your CUI, determining your CMMC level, or reviewing your SPRS score, click the button to reach out. We'll respond quickly to learn more about your compliance concerns and see how we can help streamline your certification journey.