| Firm | Headquarters | Highest Impact | Recognized Since | Active CSOs | Also Offers | |
|---|---|---|---|---|---|---|
| St. Petersburg, FL | Moderate | 2024 | 3 | ISO 27001, SOC 1 / SSAE1 16 | Profile → | |
| Tampa, FL | High | 2013 | 111 | PCI DSS, ISO 27001 | Profile → | |
| Alpharetta, GA | Unknown | 2025 | 0 | • SOC 1, 2 & 3, • ISO/IEC 27001 | Profile → | |
| Chantilly, VA | Unknown | 2020 | 0 | — | Profile → | |
| Fredericksburg, VA | Unknown | 2025 | 0 | CMMC, NIST 800-171 | Profile → | |
| Atlanta, Georgia 30319 | Unknown | 2023 | 0 | DoD's CMMC / NIST 800-171, NIST 800-53 / FISMA / RMF | Profile → | |
| Chicago, IL | Moderate | 2024 | 7 | SOC 1/2/3, PCI DSS | Profile → | |
| McLean, VA | Unknown | 2024 | 0 | • C5, • CJIS | Profile → | |
| McLean, VA | Moderate | 2014 | 2 | ISO 9001:2008, ISO 20000 | Profile → | |
| Columbia, MD | Unknown | 2016 | 0 | StateRAMP - Consulting and Assessments, FISMA - Consulting and Assessments | Profile → | |
| Greenwood Village, CO | High | 2015 | 128 | • C5, • CJIS | Profile → | |
| Fairfax, VA | Moderate | 2020 | 10 | CSA Star, HITRUST | Profile → | |
| Maryland | Unknown | 2026 | 0 | FedRAMP 3PAO (Accredited, A2LA-recognized) | Profile → | |
| Cary, NC | Unknown | 2025 | 0 | ISO27001:2022, CMMC | Profile → | |
| 4031 University Dr. Suite 100 Fairfax, VA | Moderate | 2021 | 2 | NIST 800-171, NIST RMF/FISMA | Profile → | |
| Arlington, VA | Moderate | 2017 | 5 | ISO 27001, COBIT | Profile → | |
| Oklahoma City, OK | Unknown | 2014 | 0 | ISO 9001, ISO 17020 | Profile → | |
| Potomac Falls, VA | Unknown | 2012 | 0 | — | Profile → | |
| North Bethesda, MD | High | 2015 | 24 | CMMC, DFARS | Profile → | |
| Reston, VA | High | 2015 | 3 | CMMC, NIST | Profile → | |
| Bellevue, WA | High | 2016 | 19 | CMMC, NIST Cybersecurity Framework (CSF) | Profile → | |
| Lansdowne, VA | High | 2021 | 79 | C5, CJIS | Profile → | |
| Highland Heights, Ohio 44143 | Unknown | 2015 | 0 | ISO 9001:2015, ISO 14001:2015 | Profile → | |
| Centerville, OH | High | 2022 | 21 | CNNSI 1253, FFIEC | Profile → | |
| Falls Church, VA | Unknown | 2015 | 1 | NIST RMF, ISO 17020 | Profile → | |
| North Carolina, 28659 | Unknown | 2021 | 0 | — | Profile → | |
| Tampa, FL | Unknown | 2025 | 0 | *CMMC, *NIST RMF | Profile → | |
| Suite 600, Reston VA 20190 | Moderate | 2022 | 7 | SOC 2, ISO 27001 | Profile → | |
| Mclean, VA | Unknown | 2016 | 0 | SOC | Profile → | |
| Herndon, VA | High | 2012 | 63 | • CMMC / Joint Surveillance, • DoD SRG | Profile → | |
| Scottsdale, Arizona 85266 | Moderate | 2022 | 6 | ACAB LADMF, Benchmark testing | Profile → | |
| 2nd Floor Denver, CO | Moderate | 2017 | 13 | System and Organization Control (SOC) Audits, Health Insurance Portability and Accountability Act (HIPAA) | Profile → | |
| Ashburn, VA | High | 2012 | 54 | Cybersecurity Maturity Model Certification (CMMC), NIST 800-171 | Profile → | |
| Scottsdale, Arizona 85255 | Low | 2021 | 1 | *Approved Scanning Vendor, *GDPR | Profile → | |
| 900 McLean, VA | Moderate | 2015 | 3 | Federal Information Security Management Act (FISMA), Governance Risk and Compliance (GRC) Framework | Profile → | |
| Chicago, IL | Low | 2017 | 2 | • FISMA, • State RAMP | Profile → | |
| Idaho, 83467 | Moderate | 2024 | 7 | AICPA SOC1, SOC 2, SOC3, ISAE 3000/3402, ISO 27001:2022,ISO 27701:2019, ISO 9001:2015, ISO 22301:2019, ISO 42001:2023, ISO 27017/27018/27999 | Profile → | |
| 2814 Detroit Avenue, Cleveland OH 44113 | Moderate | 2023 | 3 | NIST 800-171, FISMA | Profile → | |
| Chicago, IL | Unknown | 2016 | 0 | CCPA, CJIS | Profile → | |
| Tampa, FL | High | 2012 | 211 | CMMC 3PAO (C3PAO), StateRAMP 3PAO | Profile → | |
| Reston, VA | High | 2013 | 10 | StateRAMP, CMMC | Profile → | |
| 201 Spear St Suite 1100 San Francisco, CA | Moderate | 2020 | 4 | FISMA, NIST 800-53 | Profile → | |
| Huntsville, AL | High | 2020 | 5 | NIST 800-53, NIST 800-171 | Profile → | |
| Plano, TX | Unknown | 2017 | 2 | FISMA 3PAO, CMMC C3PAO (in process) | Profile → | |
| Baltimore MD, 20905 | Moderate | 2025 | 1 | CJIS, CMMC C3PAO | Profile → | |
| 6900 E. Camelback Road Suite 900 Scottsdale, AZ | Unknown | 2015 | 0 | FedRAMP, ISO | Profile → | |
| Irvine, CA | Moderate | 2020 | 4 | HIPAA, HITRUST | Profile → | |
| 12110 Sunset Hills Rd. STE 600 Reston, VA | Moderate | 2020 | 5 | Cybersecurity Maturity Model Certification (CMMC), NIST SP 800-171 | Profile → |
Sourced from the official FedRAMP Marketplace assessor export, dated 2026-08-18. Firms showing "Unknown" impact level typically have no completed assessment yet. Recognition status changes; confirm current status on the official Marketplace before engaging.