Fathom Cyber
Track on RadarAcquired by Ascend Cyber · 2025 · news
CMMC and NIST SP 800-171 compliance consulting for defense contractors
- Total raised
- —
- Employees
- 1
- Founded
- 2018
- Momentum
- —
Data updated August 2026
About
About Fathom Cyber
At a glance
Fathom Cyber is a cybersecurity company specializing in GRC, founded in 2018 and headquartered in North Wales, United States. It employs about 1 people and was acquired by Ascend Cyber in 2025.
Fathom Cyber is a cybersecurity consulting and advisory company based in the Philadelphia, Pennsylvania region that serves clients worldwide, with particular emphasis on Europe and the Americas. The company is a wholly owned subsidiary of Ascend Cyber and has over 20 years of experience helping government agencies, non-profits, and businesses enhance their information security programs. The company specializes in CMMC (Cybersecurity Maturity Model Certification) and NIST SP 800-171 compliance consulting services. Their service offerings include CMMC/NIST SP 800-171 consulting, NIST SP 800-171 attestation, and FCI/CUI (Federal Contract Information/Controlled Unclassified Information) scoping. The leadership team played a significant role in building the CMMC Accreditation Body (now The Cyber AB), including creating the organization's first official CMMC course. Fathom Cyber's approach focuses on helping clients implement structured, secure, and governed information security programs that ensure their security investments are commensurate with the risks they face. The company combines business, technical, and legal expertise to help clients build IT and cybersecurity programs that comply with legal and regulatory requirements. Their team has extensive experience in federal government sector information security and technology, with over 25 years of specialized knowledge in this domain.
Momentum
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FAQ
Frequently asked questions about Fathom Cyber
When was Fathom Cyber founded?▾
Fathom Cyber was founded in 2018.
Where is Fathom Cyber headquartered?▾
Fathom Cyber is headquartered in North Wales, United States.
Is Fathom Cyber public or private?▾
Fathom Cyber is a privately-held company.
How many employees does Fathom Cyber have?▾
Fathom Cyber has approximately 1 employees.
What does Fathom Cyber do?▾
Fathom Cyber is a cybersecurity consulting and advisory company based in the Philadelphia, Pennsylvania region that serves clients worldwide, with particular emphasis on Europe and the Americas. The company is a wholly owned subsidiary of Ascend Cyber and has over 20 years of experience helping gove…