Best CISA-guidance consultants by use case
Buyer-matched picks from our verified directory. Picks reflect fit for the use case — firms cannot pay to be listed or ranked.
Federal agencies buying through vehicles
Firms that live in the federal stack — BODs, CDM, zero trust — and work through contracting vehicles.
ECS
ECS is a federal technology services provider delivering cybersecurity operations, zero-trust implementation, and Continuous Diagnostics and Mitigation (CDM) support to U…
Booz Allen Hamilton
Booz Allen Hamilton is a long-standing federal consultancy with deep cybersecurity practices supporting defense, intelligence, and civilian agencies — from zero-trust arc…
CACI
CACI provides technology and expertise to U.S. federal agencies, including cybersecurity operations, zero-trust implementation, and mission IT. Its cyber work spans defen…
Guidehouse
Guidehouse is a global consultancy with a large federal practice advising agencies on cybersecurity strategy, zero-trust implementation, risk management, and resilience. …
Defense contractors (CMMC / 800-171)
Readiness specialists plus an authorized C3PAO for the official assessment.
Summit 7
Summit 7 is a Huntsville-based managed security provider built around the defense industrial base. It delivers CMMC/NIST 800-171 compliance programs, managed Microsoft 36…
Redspin
Redspin is an authorized CMMC Third-Party Assessment Organization (C3PAO) and one of the first firms to complete an official CMMC assessment. It performs CMMC Level 2 ass…
SecureStrux
SecureStrux is a cybersecurity consulting firm specializing in NIST SP 800-171 and CMMC readiness for defense contractors and subcontractors. It offers gap assessments, S…
Sera-Brynn
Sera-Brynn is a cybersecurity audit and compliance firm performing NIST 800-171 assessments, CMMC readiness work, and compliance audits for defense contractors and regula…
Cloud providers (FedRAMP path)
Authorized FedRAMP 3PAOs for assessment, with advisory depth behind them.
Coalfire
Coalfire is a cybersecurity advisory and assessment firm with a dedicated Coalfire Federal practice. It is an authorized FedRAMP Third Party Assessment Organization (3PAO…
Schellman
Schellman is an independent assessment firm and authorized FedRAMP 3PAO. It performs FedRAMP assessments, SOC examinations, and ISO 27001 audits for cloud providers and e…
A-LIGN
A-LIGN is a technology-enabled assessment firm and authorized FedRAMP 3PAO offering SOC 2, ISO 27001, FedRAMP, and CMMC assessment services. Its high-volume model pairs a…
Critical infrastructure & OT
OT security, sector coordination, and incident-response-tested teams.
Parsons
Parsons is an engineering and technology firm serving national security and critical infrastructure markets. Its cybersecurity work includes OT/ICS security, infrastructu…
Guidehouse
Guidehouse is a global consultancy with a large federal practice advising agencies on cybersecurity strategy, zero-trust implementation, risk management, and resilience. …
Kroll
Kroll is a global risk advisory firm whose cyber practice is known for incident response and digital forensics, alongside proactive security assessments, tabletop exercis…
Commercial enterprises aligning voluntarily
CPG assessments and zero-trust programs without the federal-vehicle overhead.
Optiv
Optiv is a cybersecurity solutions provider offering advisory services, assessments, and managed security. Its consultants perform framework assessments against NIST CSF …
Kroll
Kroll is a global risk advisory firm whose cyber practice is known for incident response and digital forensics, alongside proactive security assessments, tabletop exercis…
GuidePoint Security
GuidePoint Security is a cybersecurity consultancy with a Federal Solutions practice serving U.S. federal agencies and contractors. Its consultants perform security asses…
Presidio
Presidio is an IT solutions provider with a federal practice delivering cybersecurity assessments, zero-trust architecture, and managed security services to agencies and …
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