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Revealed: Our Top 10 CMMC Compliance Companies in the US

The Cybersecurity Maturity Model Certification (CMMC) is a framework created by the U.S. Department of Defense to ensure that contractors and suppliers meet strict cybersecurity standards. Any business that wants to work with the DoD or handle Controlled Unclassified Information (CUI) must now meet these requirements. CMMC is important because it protects sensitive government data from cyber threats and shows that a company takes information security seriously.

Without CMMC compliance, many businesses will lose the chance to bid on or keep defence-related contracts. This makes certification not only a security priority but also a critical business move in 2025 and beyond.

To support companies on this journey, we’ve reviewed ten of the best CMMC compliance providers in the U.S. These companies were chosen based on 3 key factors:

  1. The depth of their cybersecurity experience
  2. The range of CMMC-related services they offer
  3. The value they provide for companies of different sizes.

Whether you’re a small supplier or a large defence contractor, these trusted firms can guide you through assessments, gap analysis, documentation, and full implementation.

1. HostBreach (Philadelphia, PA)

Website: https://hostbreach.com/

  • Offers a free CMMC Cyber Snapshot to highlight visible cybersecurity gaps.
  • Provides expert-led assessments, remediation plans, and help with DFARS and NIST 800‑171 readiness.
  • Delivers vCISO services to guide ongoing compliance and cyber risk management

2. Summit7 (Huntsville, AL)

  • Known as a major player in the CMMC space, co-authoring Microsoft’s CMMC guidance.
  • Acts as a Registered Provider Organization (RPO) with a full suite of services.
  • Suited to larger organisations with substantial budgets

3. Kieri Solutions (Woodbine, MD)

  • A C3PAO listed consultant offering gap analysis, documentation support, and mock audits.
  • Focuses on practical, scalable cybersecurity tailored to small and mid-size defence contractors.
  • Offers competitive pricing for CMMC Level 2 services

4. E‑N Computers (Waynesboro, VA)

  • RPO specialising in small business defence suppliers.
  • Offers complimentary 45-minute CMMC consulting sessions.
  • Helps with Microsoft 365 (GCC/GCC High) licensing specifically for compliance

5. Coalfire (Various U.S. locations)

  • Offers end-to-end CMMC readiness assessments, gap analyses, and implementation plans.
  • Includes penetration testing, red teaming, and mock assessments.
  • Strong reputation in cybersecurity and federal compliance

6. CohnReznick (Nationwide)

  • Functions as both C3PAO and RPO.
  • Helps with readiness assessments, policy development (SSP, POA&M), and full audit sponsorship.
  • Deep expertise in government contracting and compliance alignment

7. MAD Security (U.S.-wide)

  • RPO offers gap analysis, virtual compliance management (VCM), and documentation support.
  • Achieved CMMC Level 2 and perfect SPRS score of 110.
  • Emphasises continuous, post-certification compliance

8. BARR Advisory (U.S.-wide)

  • Offers CMMC architecture mapping, gap analysis, remediation support, and ongoing compliance.
  • Experienced in multiple standards: NIST, PCI‑DSS, ISO, SOC.
  • Known for practical implementation assistance and training

9. KLC Consulting (Marlborough, MA)

  • C3PAO with focus on aerospace, defence, and IT sectors.
  • Provides gap analysis, readiness assessments, and webinars.
  • Client-focused and highly rated on compliance services

10. Ecuron Inc. (Houston, TX)

  • Offers gap analysis, readiness checks, and full CMMC 2.0 implementation.
  • Integrates CMMC with ISO 27001, M&A cybersecurity, and outsourced security teams.
  • Strong educational presence in industry events bestcmmcconsultants.com.

What is CMMC Compliance?

CMMC (Cybersecurity Maturity Model Certification) is a framework developed by the U.S. Department of Defense (DoD). Its purpose is to ensure that companies handling sensitive government information follow strong cybersecurity practices.

CMMC combines requirements from NIST SP 800‑171 with verifiable controls, requiring third‑party assessment for Level 2 certification.

Why is CMMC Compliance Important?

CMMC is essential for companies seeking DoD contracts or working in the U.S. defense supply chain. From 2025 onward, the DoD will require CMMC-verified compliance for handling Controlled Unclassified Information (CUI).

Without CMMC certification, a business may be unable to bid on or win contracts. It also helps improve cyber resilience and builds trust with partners and clients .

What Can a CMMC Consultant Help With?

A CMMC consultancy or compliance firm can guide you through several tasks such as:

  • Conducting a readiness assessment to identify gaps before formal evaluation
  • Drafting required documentation like System Security Plans (SSP) and Plans of Action and Milestones (POA&M).

This helps implementing technical and procedural controls, performing mock audits, sponsoring your official C3PAO assessment, and offering ongoing support as a virtual CISO or compliance manager.

Why Should You Act Now?

Time is critical. Achieving CMMC Level 2 readiness can take many months. Waiting until a contract requires certification often leaves you unprepared.

Acting now gives you extra time to fix gaps, complete testing, and be certification-ready when prime contractors or investors expect proof. Early adopters gain a competitive edge, can often charge more, and may benefit from lower cyber insurance premiums. Ultimately, proactive preparation positions your company ahead of those left scrambling at the last minute

For any feedback or comments, or if you would like to be featured, please contact us at hello@thetechnational.com

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