Fathom Cyber LLC
Fathom Cyber LLC was a boutique cybersecurity consulting firm providing CMMC Level 2 certification assessments, NIST SP 800-171 compliance consulting, and CUI training to defense and government contractors, operating as an authorized C3PAO before merging into Ascend Cyber in October 2025.
- Company typePrivate
- Founded2018
- HeadquartersNorth Wales, United States
- Headcount1–10
- GTM typeB2B
- OfferingServices
What Fathom Cyber LLC does
Fathom Cyber LLC was a privately-held cybersecurity consulting firm founded in 2018 and headquartered in North Wales, Pennsylvania. The company specialized in services supporting the Cybersecurity Maturity Model Certification (CMMC) ecosystem, including third-party Level 2 certification assessments as an authorized CMMC Third-Party Assessment Organization (C3PAO), NIST SP 800-171 compliance consulting, and Controlled Unclassified Information (CUI) training programs for defense and government contractors. Its core technology competency centered on CMMC C3PAO assessment methodology and NIST SP 800-171 compliance framework implementation, with instructors who contributed over 4,000 hours to help The Cyber AB create the CMMC ecosystem and authored reference materials on CUI and CMMC.
The firm operated a professional services business model with three revenue streams: certification assessment services, compliance consulting, and training programs (including CCP and CCA exam preparation, executive bootcamps, and CUI fundamentals courses). Pricing was quote-based and undisclosed, consistent with enterprise B2B engagements. Its primary customer segment was defense and government contractors required to achieve CMMC certification for Department of Defense contracts, with a secondary commercial segment.
Effective October 15, 2025, Fathom Cyber merged with Peak InfoSec and Ascend Cyber to form a unified cybersecurity company operating under the Ascend Cyber name. All contracts, certifications, and client commitments carried forward without interruption. Following the merger, the combined entity delivers accredited CMMC assessments, expert consulting, tailored training, and on-demand staffing solutions across government, defense, and commercial markets. James Goepel served as CEO and General Counsel of the entity. The firm is notable for being among the first cohort of C3PAOs authorized by The Cyber AB since 2022, providing a regulatory-anchored competitive position, though the July 2026 DoW suspension of CMMC Phases 2-4 introduces material near-term regulatory uncertainty.
Fathom Cyber LLC firmographics
Firmographics- Name
- Fathom Cyber LLC
- Legal name
- Fathom Cyber LLC
- Website
- https://fathomcyber.com
- Company type
- Private
- Founded year
- 2018
- Operating status
- Acquired
- Headcount range
- 1–10 employees
- Short description
- Fathom Cyber LLC was a boutique cybersecurity consulting firm providing CMMC Level 2 certification assessments, NIST SP 800-171 compliance consulting, and CUI training to defense and government contractors, operating as an authorized C3PAO before merging into Ascend Cyber in October 2025.
- Ownership category
- akta.pro rank
Fathom Cyber LLC industry classification
Industry- Product category
- Cybersecurity Compliance Services
- NAICS
- Computer Systems Design and Related Services (54151), Business Schools and Computer and Management Training (6114), Computer Training (611420)
- SIC
- Services-Testing Laboratories (8734)
- akta.pro primary industry
- Security Audits & Compliance (ISO 27001, SOC 2, PCI DSS, HIPAA, SOX) (BPAKADAC)
- akta.pro secondary industry
- Information Technology (IT) & Cybersecurity Certifications (EDAAANAA)
Keywords
Where Fathom Cyber LLC is headquartered
LocationHeadquarters
- HQ city
- North Wales
- HQ country
- United States
- HQ region
- North America
Markets served
Fathom Cyber LLC business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D, Others
Revenue model
- CMMC Certification Assessment Services: Revenue from conducting CMMC Level 2 certification assessments as an authorized C3PAO, including mock assessments and formal certification assessments for defense contractors.
- Compliance Consulting: Consulting fees for NIST SP 800-171 implementation guidance, CMMC readiness assessments, and ongoing compliance support for government and defense contractors.
- Training Programs: Revenue from CMMC training courses including CCP and CCA exam preparation, CUI fundamentals, executive bootcamps, and custom training programs for organizations.
Go-to-market motion3 records
Distribution channels3 records
Marketing channels6 records
Fathom Cyber LLC product offering
Product offeringCore offering
Fathom Cyber LLC provided CMMC Level 2 certification assessments as an authorized C3PAO, NIST SP 800-171 compliance consulting, and Controlled Unclassified Information (CUI) training services for defense and government contractors. Offerings included formal and mock assessments, CCP/CCA exam preparation, executive bootcamps, and Letters of Attestation of Compliance. Services were sold directly to organizations in the Defense Industrial Base seeking CMMC certification for DoD contract eligibility.
Product overview
Fathom Cyber LLC, now part of Ascend Cyber following a merger with Peak InfoSec and Ascend Cyber effective October 15, 2025, provided cybersecurity services including CMMC C3PAO certification assessments, compliance consulting, and CUI (Controlled Unclassified Information) training services for defense and government contractors.
Differentiator
Problem solved
Functional benefit
Products and services
- CMMC Level 2 Certification Assessment
- CMMC and NIST SP 800-171 Consulting
Quantifiable outcome
- Over 10,000 students taught about cyber, CMMC, and CUI by instructors
- +1 more outcomes
Companies that use Fathom Cyber LLC
Customer profileSegments2 records
Ideal customer profiles2 records
Fathom Cyber LLC technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Fathom Cyber LLC partnerships and signals
Strategic signalPartnerships
Three partnerships are on record, tiered core.
- Peak InfoSeccoreFathom Cyber merged with Peak InfoSec and Ascend Cyber effective October 15, 2025, forming a unified cybersecurity company under the Ascend Cyber name. The combined entity brings together expertise in CMMC C3PAO certification assessments, compliance consulting, and CUI training services for defense and government contractors. All existing contracts, certifications, and client commitments from the merging firms carry forward under Ascend Cyber without interruption.
- Ascend CybercoreFathom Cyber merged with Peak InfoSec and Ascend Cyber effective October 15, 2025, forming unified Ascend Cyber. The merger combines cybersecurity risk, compliance, and defense services expertise for government, defense, and commercial markets. Brand consolidation and operational integration proceed over the next quarter.
- The Cyber ABcoreThe governing body for the CMMC ecosystem that authorizes C3PAOs. Peak InfoSec (now part of Ascend Cyber) has been an authorized C3PAO since 2022 when The Cyber AB began authorizing C3PAOs.
Scale indicators2 records
Recent moves4 records
Expansion highlights4 records
Fathom Cyber LLC competitors and assessment
Company assessmentDirect peers
- Beryllium InfoSec: Authorized CMMC C3PAO providing NIST 800-171 readiness, Level 2 certification assessments, and CUI training to small and mid-sized defense contractors — closely matched business model, certification levels, and customer segment.
- Kieri Solutions: CMMC and NIST 800-171 compliance consulting firm providing readiness assessments, remediation support, and CUI training for small and mid-sized defense contractors — shared consulting-first, DIB-focused service model.
- Peak InfoSec: Co-merging CMMC C3PAO and NIST 800-171 compliance consulting firm that contributed the C3PAO license, training programs, and CMMC ecosystem authorship into the same Ascend Cyber entity — once its closest operational comparator and now internal to the combined firm.
- Summit 7 Systems: Pure-play CMMC and NIST 800-171 compliance, managed services, and Microsoft GCC High deployment firm serving the Defense Industrial Base — direct competitor offering assessment, consulting, and managed compliance on the same regulatory stack.
- Edwards Performance Solutions: Authorized CMMC C3PAO and FedRAMP/cybersecurity assessment firm focused on federal contractors, offering CMMC Level 2 certification assessments, NIST 800-171 consulting, and training — overlapping assessment and consulting capabilities for the DIB.
- Redspin (HII Cyber & Engineering): One of the earliest authorized CMMC C3PAOs, now operating inside Huntington Ingalls Industries' cybersecurity business — conducts CMMC Level 2 assessments and readiness work for defense contractors under a near-identical business model.
Broad incumbents
- Schellman & Co: Top-tier cybersecurity and compliance assessment firm offering ISO, SOC 2, PCI, FedRAMP, and CMMC services — a much broader incumbent but with overlapping CMMC certification work in the same buyer population.
- A-LIGN: Established SOC 2, ISO 27001, HITRUST, HIPAA, and CMMC compliance audit firm serving thousands of clients with proprietary compliance-automation tooling — a much broader compliance portfolio but overlapping CMMC assessments.
- BSI Group: Global standards body and certification firm offering ISO assessments and CMMC-adjacent compliance services — vastly broader portfolio but overlap on enterprise certification and compliance-program work for defense primes.
- Coalfire: Large cybersecurity advisory and assessment firm offering CMMC readiness, C3PAO-adjacent services, FedRAMP, and broader compliance — much broader portfolio but overlapping CMMC assessment work for federal contractors and primes.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights5 records
Customer concentration
Fathom Cyber LLC social profiles
Digital presenceFathom Cyber LLC financial estimates
Financial estimateRevenue estimate
Valuation estimate
Fathom Cyber LLC leadership team
Management profileNumber of profiles
Profiles1 record
Fathom Cyber LLC funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Fathom Cyber LLC M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Fathom Cyber LLC
What does Fathom Cyber LLC do?
Fathom Cyber LLC provided CMMC Level 2 certification assessments as an authorized C3PAO, NIST SP 800-171 compliance consulting, and Controlled Unclassified Information (CUI) training services for defense and government contractors. Offerings included formal and mock assessments, CCP/CCA exam preparation, executive bootcamps, and Letters of Attestation of Compliance. Services were sold directly to organizations in the Defense Industrial Base seeking CMMC certification for DoD contract eligibility.
Is Fathom Cyber LLC a public or private company?
Fathom Cyber LLC is a private company. It is classified as founder individual operated bootstrapped and is currently acquired.
When was Fathom Cyber LLC founded?
Fathom Cyber LLC was founded in 2018. It employs 1 to 10 people.
Where is Fathom Cyber LLC based?
Fathom Cyber LLC is headquartered in North Wales, United States, in the North America region.
How does Fathom Cyber LLC make money?
Three revenue lines are on record. CMMC Certification Assessment Services are the primary driver. The others are compliance Consulting and training Programs.
Who are Fathom Cyber LLC's main competitors?
Direct peers on record are Beryllium InfoSec, Kieri Solutions, Peak InfoSec, Summit 7 Systems, Edwards Performance Solutions and Redspin (HII Cyber & Engineering). Broad incumbents are Schellman & Co, A-LIGN, BSI Group and Coalfire.
Does Fathom Cyber LLC have an API?
No public API is recorded for Fathom Cyber LLC.
What industry is Fathom Cyber LLC in?
Fathom Cyber LLC's product category is Cybersecurity Compliance Services. Its primary akta.pro industry code is BPAKADAC, Security Audits & Compliance (ISO 27001, SOC 2, PCI DSS, HIPAA, SOX), with a secondary code of EDAAANAA, Information Technology (IT) & Cybersecurity Certifications. Its NAICS code is 54151 and its SIC code is 8734.