The 7-Step Guide To CMMC Assessment

7 Step Guide to CMMC Assessment

Just when you thought you were on top of CMMC compliance, CMMC 2.0 has come along, upping the stakes for identifying and managing cybersecurity within your business. On top of that, the new National Initiative for Improving Cybersecurity in Supply Chains (NIICS) adds yet another layer of compliance complication for businesses that want to do business with the government. All of this means that having a streamlined process in place for meeting updated compliance mandates is more important than ever.

 

Fortunately, you don’t have to rebuild all of your compliance and assessment processes from the ground up to meet CMMC 2.0 and other new compliance needs. If you already have compliance procedures in place that address NIST standards or similar U.S. government mandates, there’s a good chance that you can expand upon them to address CMMC 2.0 compliance, too.

The challenge of CMMC assessment

Let’s be clear: CMMC assessments are challenging, no matter how streamlined your compliance program is or how much cybersecurity expertise you have in-house. Beyond the complex technical rules you have to meet, you have challenges such as:

 

  • Meeting deadlines: You can’t perform assessments according to timelines you create. You need to meet externally imposed deadlines.
  • Shareholder buy-in: Assessments cost time and money. You need to convince shareholders that the assessment is worth the investment.
  • Cost of certification: Becoming certified, too, comes with a cost, which makes it even harder in some respects to get buy-in.

In the long run, achieving CMMC compliance is well worth it because it allows your business to do business with the DoD. But that doesn’t mean that CMMC assessment is simple or straightforward.

 

Here’s 4 Reasons Why Your CISO Wants To Implement A CMMC Framework

Key differences between NIST and CMMC assessment

As we noted, companies that already have compliance programs designed to meet NIST cybersecurity standards are in a good position to extend upon those programs to address CMMC assessment requirements, too. Both frameworks allow for self-assessments, at least in some cases, and the assessment processes are similar.

But NIST and CMMC are not identical, of course. You must understand the differences before you devise a CMMC assessment strategy based on NIST.

 

One obvious difference is that NIST requirements are developed by the National Institute of Standards and Technology, whereas the Department of Defense oversees CMMC compliance requirements. This means that NIST and CMMC rules could evolve in different directions in the future, even though there is some overlap today.

 

On top of this, under the CMMC framework, not everyone can self-assess. Third-party assessments are required for businesses that manage data that the DoD considers critical to national defense. So, before building a CMMC 2.0 compliance strategy based on self-assessment, be sure you’re actually eligible to self-assess.

7 essential steps for CMMC assessments

If you determine that you can self-assess, then you can build a CMMC assessment process based on the assessment operations you already have in place for NIST or similar standards. Here’s how to do that, step-by-step.

Step 1: Set goals

Start by determining why you are performing a CMMC assessment. Is it because you are specifically required to do so as a contractor for the DoD? Or are you doing it voluntarily, as a means of assessing your cyber health? In the latter case, you have more control over the assessment process and its outcomes, because you won’t have to report to the DoD.

Step 2: Determine assessments you have completed

Identify which assessments your business has already performed, and compare those assessments to CMMC assessment requirements. Again, there is a lot of overlap between requirements like NIST’s and CMMC’s, so you may be able to duplicate large parts of your existing assessments.

Step 3: Perform gap analysis

Of course, there is not likely to be complete overlap between existing assessments and CMMC. You’ll need to perform a gap analysis (or hire an outside auditor for this purpose) to determine which additional data you’ll need to collect or processes you’ll have to undertake to perform CMMC assessment.

Step 4: Create or update the SSP

NIST defines the System Security Plan, or SSP, as a “formal document that provides an overview of the security requirements for the system and describes the security controls in place or planned for meeting those requirements.” You’ll want to have an SSP in place because it serves as the basis for authorization decisions, while also providing detailed information to support processes and activities in the system development lifecycle. Thus, the SSP serves as the information foundation for your CMMC assessment operation.

Step 5: Build a plan of action and milestones

Next, form a plan of action and milestones (POA&M), which is the roadmap you plan to follow after creating your SSP. The POA&M defines a clear course of action to take and goals you plan to meet to ensure that employees and stakeholders know their roles in keeping and advancing compliance goals. Your POA&M should identify the tasks that need to be completed to secure your systems, proposed remediations for risks and which employees will perform which tasks.

Step 6: Form a remediation plan

The results of your gap analysis should form the basis for a remediation plan. The purpose of this plan is to allow you to pinpoint compliance risks to remediate, prioritize activities to fix vulnerabilities and determine the associated costs you’ll pay to become CMMC-certified. You can formulate the remediation plan yourself, or outsource it to a Managed Security Service Provider (MSSP).

Step 7: Maintain compliance and reporting

Treat CMMC assessment as an ongoing process, not a one-and-done affair. You’ll need to update your plans continuously as your risks change. Changes to your vendors or supply chains may necessitate compliance changes, too. And you’ll want to monitor for risks on an ongoing basis so that you can remediate them immediately, rather than waiting till your next assessment to discover and address problems.

Achieving a well-implemented CMMC assessment framework

When you follow the steps described above, you get a well-maintained cybersecurity program that enables CMMC certification, while also enhancing supply chain security and keeping sensitive data and intellectual property more secure. And you can do it all without having to overhaul your compliance tools or processes from scratch.

 
 

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