Top 10 Network VAPT Service Providers in the United States
The best network VAPT provider depends on what you need tested and what your customers or regulators expect. Choose a specialist for deep technical testing, a compliance-focused provider when a framework such as PCI DSS drives the work, and a consultancy such as CyberSapiens when you want testing alongside compliance support. CyberSapiens is listed first because we publish this guide. The other nine are in alphabetical order.
Network VAPT, short for vulnerability assessment and penetration testing, checks whether an attacker could get into your network from the internet or move around inside it. It covers external and internal hosts, firewalls and segmentation, remote access, and the services and configurations that connect them. A vulnerability scan lists known weaknesses. A penetration test shows which of them can be exploited and how they chain together.
This guide covers ten providers. We list a firm only where its own website or an official register confirms a testing service, and we say where a source does not name network testing. We checked in October 2026. A firm missing from the guide is unconfirmed, not ruled out.
Disclosure. CyberSapiens publishes this guide and has a commercial interest in it. Every entry follows the same format and states only what a source says.
What Is the Best Network Security Testing Provider in the US?
There is no single best provider. A firm that fits a payment card audit may not suit an internal network review, and the reverse. Match the type of provider to your need, then apply the Verify before you sign checks.
Specialist testing firms
Teams that focus on offensive testing, often with a defined menu of external, internal, application and cloud tests. They suit buyers who want technical depth.
Watch for: how much of the work is network testing, and who performs it.
Global consultancies
Large firms that offer testing alongside advisory and incident response. They suit buyers who want one relationship across several security needs.
Watch for: which team delivers the work and how it is scoped for your network.
Compliance-focused providers
Firms that frame testing around frameworks such as PCI DSS or SOC 2. They suit buyers whose main driver is an audit or customer requirement.
Watch for: whether the test goes beyond the minimum the framework asks for.
Consultancies with compliance support
Firms that pair testing with readiness work such as ISO 27001. They suit teams that want one partner for both.
Watch for: independence if the same firm advises on a framework and tests against it.
Whichever you choose, ask for a written scope, named testers, rules of engagement and a retest in the proposal.
List of Network Security Testing Providers in the US
CyberSapiens is first because we publish this guide. The other nine follow in alphabetical order, and none is ranked. Each entry states what a source says, and the “Best for” line is our reading of where that fits.
1. CyberSapiens
CyberSapiens is a cybersecurity consultancy that provides vulnerability assessment and penetration testing, including network testing, alongside ISO 27001, PCI DSS, HIPAA and other compliance services. Our USA office is at 30 N Gould St Ste R, Sheridan, WY 82801, and we also have offices in Australia, Canada and India. We do not hold CREST status.
How a Network Security Test Runs With Us
- Scope definition. We agree which networks, hosts and environments are in scope, and what is excluded.
- Reconnaissance and scanning. We map the in-scope network and scan for known vulnerabilities.
- Penetration testing. Testers attempt to exploit in-scope weaknesses, including privilege escalation and post-exploitation analysis, within the rules of engagement.
- Reporting. The report documents each vulnerability, its consequences, how it could be exploited and the steps to fix it.
- Remediation support. We explain the fixes and support your team as it works through them.
Why Organizations Choose CyberSapiens
- Network testing is part of our listed vulnerability assessment and penetration testing services.
- Reports explain consequences and fix steps, not only a list of findings.
- Testing and compliance work such as PCI DSS or HIPAA readiness can come from one team.
- We have a USA office as well as offices in three other countries.
Best for: teams that want network testing and compliance support from one consultancy, and do not require CREST status. Where a contract requires it, choose a firm that holds it.
Explore Our VAPT Services2. Bishop Fox
Its page lists network security testing, both external and internal, along with application, cloud (AWS, GCP, Azure and Kubernetes), hardware, continuous and red team services. The page we read does not state a headquarters and claims no formal accreditation for the company itself. It lists an FS-ISAC affiliate partnership.
Best for: buyers who want network, application and cloud testing from one specialist.
3. Coalfire
Its penetration testing data sheet lists red team, enterprise, external-only, application or mobile and compliance-only test types, plus wireless testing and social engineering. It says its testers are certified but does not name the certifying bodies, and the data sheet names no accreditations.
Best for: teams that want to choose from a defined menu of test types, including one built around a compliance requirement.
4. Kroll
Kroll’s site says it is headquartered in New York and states that CREST accredits it as a global penetration testing provider. It lists external and internal network testing, web, cloud, API and mobile testing, and red and blue team exercises.
Best for: buyers who want a global firm for network, cloud and API testing.
5. NCC Group
NCC Group’s site lists penetration testing and continuous penetration testing and displays accreditation marks, including CREST, which you should confirm on the issuer’s site. The page we read shows a US and Canada contact line and does not list US offices.
Best for: buyers who want a global consultancy with continuous testing options.
6. NetSPI
NetSPI’s CREST listing shows Penetration Testing and threat-led penetration testing, and says it is headquartered in Minneapolis with offices across the US, Canada, the UK and India. Its external network testing data sheet describes testing of internet-facing networks and systems from an anonymous user’s perspective, with manual verification of findings and remediation guidance.
Best for: teams that want external network testing with verified findings and fix guidance.
7. Optiv
Optiv’s targeted network penetration test page describes a phased approach, assessing the perimeter from the outside in and the internal network from an adversarial perspective. Its testing page also lists breach simulations, wireless, physical and social engineering assessments. It states no certifications and describes itself as the largest commercial attack and penetration team in the world, which is its own claim.
Best for: buyers who want perimeter and internal testing with physical and social engineering options.
8. Packetlabs
Packetlabs lists a Toronto headquarters with offices in San Francisco and Sydney. Its site states it is CREST-accredited and SOC 2 Type II attested, and cites OSCP-minimum staffing. It lists penetration testing, application penetration testing, adversary simulation and security assessments.
Best for: buyers who want a specialist with a stated CREST accreditation and a US office.
9. Trustwave
Trustwave’s page lists network exposure testing inside and outside the firewall, testing of IT, OT and IoT, physical and people targets, on-demand testing as a service, and retesting for findings validation at no extra charge. The page we read states no accreditations or location.
Best for: buyers who want on-demand testing across network, OT and physical targets.
10. Vumetric
Vumetric’s site lists headquarters in Las Vegas and Toronto and describes it as a Canadian provider. It lists external and internal network testing, SCADA and ICS testing, application, hardware and red team services, and compliance-focused testing for PCI DSS, SOC 2, ISO 27001, GDPR and FDA. It states ISO 9001 certified processes and shows staff certification logos such as OSCP and OSEP.
Best for: buyers who want network and industrial control system testing with compliance-driven options.
Content Reviewed By
Ketki Tidke
Cyber Security and GRC Lead Auditor
ISO 27001 Lead Auditor
Ketki is a certified ISO 27001 Lead Auditor specialised in Governance, Risk and Compliance, with experience consulting public, private, and government clients. She evaluates threats, risk impacts, and regulatory requirements across multiple industry frameworks.
Network Security Testing in the US: Frequently Asked Questions
Who is the best network security testing provider in the US?
There is no single best provider. Choose by need: a specialist for deep technical testing, a compliance-focused provider when a framework such as PCI DSS drives the work, or a consultancy such as CyberSapiens when you want testing with compliance support.
What is the difference between a vulnerability scan and a penetration test?
A scan lists known weaknesses, usually with automated tools. A penetration test is largely manual and shows which weaknesses can be exploited and how they chain together.
Is network penetration testing required in the US?
No single US law requires it for every business. PCI DSS expects penetration testing for payment card environments, HIPAA requires risk analysis and periodic evaluation without naming penetration testing, and customers and insurers often ask for test evidence.
How often should we test our network?
At least annually and after significant changes, such as a major network change or new systems, which is also what PCI SSC guidance describes. Some contracts and frameworks set their own frequency.
Can our own IT team do the test?
Not if it runs or supports the systems being tested. PCI SSC guidance says testers must be organizationally separate from the management of the target systems.
What should I check before choosing a provider?
Look for a written scope, named testers with relevant experience, rules of engagement, independence, a retest, and verifiable accreditation if you rely on one.
Ready to Test Your Network?
Talk to CyberSapiens about scope, rules of engagement and retesting for your network. We will help you decide what to test first and what your customers expect.
Email us
[email protected]Our USA office
30 N Gould St Ste R, Sheridan, WY 82801
