You Can DIY a Lot of Things. CMMC Level 2 May Not Be One of Them.

It’s a great feeling when you can fix something yourself. When you can stop a faucet from leaking or a breaker from tripping, your budget, and your ego, get a quick boost. And when it doubt, there’s always a YouTube video (or two) at the ready to help.
That’s how some defense contractors are approaching Cybersecurity Maturity Model Certification (CMMC) Level 2 certification. They hand the challenge over to their IT team, assuming it’s another job they’ve always been able to handle. Then they learn the hard way that even with their experienced team, they fail the assessment.
For that DIY project, if someone ends up calling in reinforcements to help, it’s likely because the job would have taken too long, cost too much, or created more problems than it’s worth.
The CMMC Clock Is Ticking
Starting in November 2026, many prime contractors will need to demonstrate Level 2 compliance through a certified third-party assessor (C3PAO).1 Even proven defense contractors with a long track records can be on the outside looking in if they miss the deadline or fail a compliance audit. This would limit their chances to compete for new contracts, and, worse, keep the defense clients they already have.
CMMC Level 2 is structurally different from what many IT departments are used to delivering. This is especially true for small to midmarket businesses where the operational costs impact them more than they can handle alone.2
Every month spent figuring it out yourself is a month closer to losing access to contracts that require compliance. With a limited number of assessors, rising demand, the high cost of gathering evidence, and ongoing confusion around auditor expectations, a CMMC Level 2 initiative is often better handled by specialists than a DIY effort.3
Tools That May Be Missing from Your Toolshed
If you’re thinking that your CMMC Level 2 readiness gaps can be filled by adding more staffing hours or developing a few new team skills, you may be reaching out for the wrong tools. Level 2 certification starts with putting the right security practices in place, keeping them running continuously, and proving they are being followed consistently.
Identity and access management
Employees, contractors, and partners need access to the systems and data they need to do their jobs. That means reviewing accounts regularly and removing access that’s no longer needed. Capabilities like multifactor authentication (MFA), credential hygiene, and privilege access management (PAM) help reduce risk and strengthen control over sensitive information.
Network and communications protection
Protecting Controlled Unclassified Information (CUI) as it moves through your environment is critical for Level 2 certification. Networks need to be secured and connections controlled. Reducing opportunities for unauthorized access means bringing on capabilities like boundary defense and split tunneling prevention to strengthen protections around sensitive data.
Device and configuration management
Keeping computers, servers, and other devices up to date and properly configured helps prevent small oversights from turning into big security problems. Missed patches or outdated settings can quickly become security challenges. Change control and vulnerability patching all play a role in reducing risk.
Monitoring and security operations
Reviewing alerts, investigating unusual activity, and responding quickly are all part of maintaining a strong security posture. A Security Information and Event Management (SEIM) platform is typically required to support continuous monitoring and spot suspicious activity.
Mandatory compliance documentation
Policies, procedures, and records are as important as the technology itself because auditors need evidence that controls are being followed. A System Security Plan (SSP) documents how requirements are being addressed, while the Plan of Action and Milestones (POA&M) provides a remediation roadmap for controls that need to be corrected after the assessment.
When to Call for Help
Even if your team has deployed security tools or configured monitoring platforms in the past, operating those capabilities continuously and producing audit-ready evidence often needs a different operating model than most team are used to. Maintaining assessment readiness takes more than a help desk function, a compliance checklist, or experience with frameworks like PCI DDS.
If there’s a gap in compliance at point in Level 2, that’s an operational gap that must be filled.
NexusTek CMMC on Call
Like any project, it makes sense to start with the basics: how much time, money, and capability is needed to do this project right. There comes a point then the cost of building and staffing the project internally is more than the cost of partnering with a provider that already runs it at scale.
The goal is to give your team the support they need to meet CMMC requirements without shifting focus from the day-to-day responsibilities that keep the business running.
Getting certified efficiently often comes down to recognizing when your organization needs help and bringing in the expertise before the clock runs out.
Before you turn CMMC Level 2 into your next DIY project, talk with a CMMC specialist about what it will really take to get certified https://www.nexustek.com/cmmc-2-0-compliance-services
Sources:
1. DOD, CMMC Assessment Guide Level 2, Version 2.13, September 2024
2. FedTech, Major Contractors Close In on CMMC 2.0 Readiness, April 2025
3. DefenseScoop, Pentagon begins enforcing CMMC compliance, but readiness gaps remain, November 2025
