Best Network Pen Testing Companies in USA

34 network penetration testing providers serve USA clients. This list ranks them by accreditation depth, methodology, and editorial scoring. Look for providers with internal Active Directory expertise, lateral-movement experience, and credentialled offensive certifications (OSCP, OSEP, CRTP). US buyers should look for FedRAMP 3PAO accreditation for federal cloud work, PCI QSA for payment-handling environments, and SOC 2 audits for SaaS clients.

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34 providers found
34 providers
Madison, South Dakota, United States · Checked Sept 2026

US cybersecurity consulting, audit and testing firm founded in 2004, focused on community banks and credit unions, with external, internal, web application, wireless and PCI DSS penetration testing plus CMMC Level 1 and 2 readiness work.

Services: Network, Web Application, Wireless, Social Engineering +3
Tampa, Florida, United States · Checked Sept 2026

Compliance audit firm delivering web application and network penetration testing with findings mapped to MITRE ATT&CK, alongside the SOC 2, ISO 27001, CMMC, and FedRAMP assessments the results feed into, from a testing team kept independent of the audit side.

Accreditations: FedRAMP 3PAO, CMMC C3PAO, HITRUST Authorized Assessor, PCI QSA
Services: Web Application, Network, Cloud, Red Teaming +3
Spearfish, South Dakota, United States · Checked Sept 2026

Community-driven penetration testing firm known for free security education, open-source tools, Wild West Hackin' Fest, and practical offensive security services.

Accreditations: SOC 2
Services: Network, Web Application, Social Engineering, Red Teaming +4
New York, New York, United States · Checked Apr 2026

Cloud-based Penetration Testing as a Service platform combining AI-driven automation with expert manual testing at accessible price points.

Accreditations: SOC 2, ISO 27001
Services: Web Application, Network, API, Cloud +3
Atlanta, Georgia, United States · Checked Sept 2026

US penetration testing firm founded in 2011, running 600+ engagements a year with a fully remote, US-based team. Manual, expert-led testing across web, network, cloud, mobile, wireless, OT/ICS, and AI/LLM. Gartner Sample Vendor for PTaaS.

Accreditations: OSCP Employer
Services: Web Application, Network, Mobile App, Cloud +12
San Francisco, California, United States · Checked Sept 2026

Crowdsourced bug bounty pioneer founded in 2012 by Casey Ellis, offering managed programs and crowd-powered penetration testing from hundreds of thousands of ethical hackers.

Accreditations: SOC 2, ISO 27001
Services: Web Application, API, Mobile App, Network +2
Westminster, Colorado, United States · Checked Sept 2026

Compliance-focused cybersecurity advisory firm and FedRAMP 3PAO specializing in penetration testing that meets stringent regulatory requirements.

Accreditations: SOC 2, FedRAMP 3PAO, PCI QSA, ISO 27001
Services: Web Application, Network, Cloud, API +4
San Francisco, California, United States · Checked Sept 2026

Pioneer of Pentest as a Service, delivering fast, platform-based penetration testing with a vetted global community of security researchers.

Accreditations: SOC 2
Services: Web Application, Network, API, Mobile App +1
Austin, Texas, United States · Checked Sept 2026

Global cybersecurity leader leveraging world-class threat intelligence from the Falcon platform to deliver intelligence-led penetration testing and red teaming.

Accreditations: SOC 2, ISO 27001
Services: Red Teaming, Network, Web Application, Cloud +4
Reston, United States · Checked Sept 2026

US-headquartered cybersecurity consultancy with 800+ employees, serving ~40% of the Fortune 500. FedRAMP 3PAO, PCI QSA, and HITRUST accreditations.

Accreditations: FedRAMP 3PAO, PCI QSA, SOC 2, ISO 27001
Services: Web Application, Network, Mobile App, Cloud +11
San Francisco, California, United States · Checked Sept 2026

World's largest ethical hacker platform with over one million researchers, offering bug bounties and structured penetration testing to the US DoD and Fortune 500.

Accreditations: SOC 2, ISO 27001, FedRAMP 3PAO
Services: Web Application, API, Mobile App, Network +2
Seattle, Washington, United States · Checked Sept 2026

Boutique security consultancy specialising in IoT, SCADA/ICS, embedded systems, and hardware security research with world-renowned researchers.

Accreditations: OSCP Employer
Services: Web Application, Network, IoT, SCADA/ICS +7

Best Network Pen Testing Companies in USA, FAQs

How do I find the best network pen testing provider in USA?+

Start by shortlisting providers with verified network pen testing experience and accreditations that match your industry. This page lists 34 providers offering network penetration testing to USA clients, ranked by accreditation depth, methodology, and editorial scoring. Compare scope, methodology, and pricing across at least three providers before committing.

What accreditations matter most for network pen testing in USA?+

US buyers should look for FedRAMP 3PAO accreditation for federal cloud work, PCI QSA for payment-handling environments, and SOC 2 audits for SaaS clients. On top of those, Look for providers with internal Active Directory expertise, lateral-movement experience, and credentialled offensive certifications (OSCP, OSEP, CRTP).

How much does network pen testing cost in USA?+

Network Pen Testing engagements in USA typically range from $5,000 to $50,000 depending on scope, complexity, and required accreditations. Boutique providers often start lower, while large consultancies and engagements requiring CREST, CBEST, or FedRAMP 3PAO accreditation sit at the higher end. Request fixed-scope quotes from at least three providers to benchmark fair market pricing.

How long does a network pen testing engagement take in USA?+

Most network pen testing engagements in USA run between 1 and 4 weeks of active testing, plus 1 to 2 weeks for reporting and remediation review. Larger or more regulated engagements (red team programmes, multi-environment cloud assessments) can extend to 6 to 12 weeks. Build buffer time into procurement schedules to allow for accredited tester availability.