Top 15 Penetration Testing Service Companies in USA

Cyberattack incidents are exploding. As per Statista, the number of publicly reported data breaches in the USA rose to 3,158 cases in 2024, which is significantly higher than previous years. That’s why selecting a penetration testing partner is no longer a choice, but a necessity. However, selecting a penetration testing vendor in the US is easier said than done.

This blog serves as a starting point by providing a list of the best penetration testing companies in the USA. This is not a definitive ranking of companies in any way, but you can use it as an initial filter.

Let’s get started!

List of Top 15 Penetration Testing Companies in the US

Below we have curated the list of the best pentesting companies in the US based on various factors:

1. SecureLayer7

SecureLayer7 is counted among reputed penetration testing companies in the US. Headquartered in Texas, FL, it offers a blend of automated and manual penetration testing to proactively identify vulnerabilities. It provides a wide gamut of services like web application, mobile application testing, API testing, cloud security testing, red team assessment, and web application security testing.

SecureLayer7 provides actionable reports with an executive summary, clear risk prioritization, and suggestions for remediation. It supports compliance requirements with frameworks like OWASP, NIST, PCI-DSS, HIPAA, and SOC 2. 

It has a proprietary Pentesting-as-a-Service (PTaaS) platform, BugDazz, to enhance real-time collaboration and provide a 360-degree dashboard.

Pros:

• Robust pentesting methodology
• Blend of manual and automated penetration testing 
• Experienced and certified pentesters
• Advanced PTaaS platform
• Expertise in PCI Compliance, OWASP Top Ten, and NIST 800-53
• Detailed business-oriented reports and dashboards
• Actionable remediation reports 
• Round-the-clock 24/7 customer support
  

Cons:

Pricing plans are not clearly available

2. Bishop Fox

Headquartered in Arizona, USA, BishopFox is a leading company specializing in offensive security and penetration testing services. Known for its expert team and cutting-edge proprietary tools, it provides tailored assessments that go beyond surface vulnerabilities.

Core services offered by Bishop Fox include web and mobile application pentesting, cloud security testing, red teaming, AI and LLM testing, social engineering, and source code review. Bishop Fox has an impressive list of clients from Fortune 100 companies and top tech firms.

Pros:

• Trusted by Fortune 100 and top tech companies for quality and speed
• Offers a blend of manual and automated testing
• Comprehensive coverage including apps, cloud, networks, IoT, and AI
• Tailored testing aligned with client risks and needs
• Clear and actionable reports

3. Rapid7

Rapid7, headquartered in Boston, has built a strong reputation in the US for its open-source security roots and its powerful suite of penetration testing tools. Unlike basic scanners, It focuses on identifying risks that automated scanners may miss.

Beyond penetration testing, Rapid7 also offers solutions in detection, response, and vulnerability management, making it a solid choice for companies that want end-to-end protection and lasting results.

Pros:

• Expertise in finding hidden vulnerabilities 
• Strong threat intelligence

Cons:

• Some users report weaker customer support
• Scanned devices must be removed manually

4. Cobalt

Cobalt is one of the few globally recognized penetration testing companies that connects businesses with pentesters matched to their specific security needs. Cobalt has designed penetration tests based on realistic attack scenarios tailored to specific industry and risk profiles. It provides expert remediation support and ensures compliance with SOC 2, PCI-DSS, HIPAA, and CREST. 

Cobalt can seamlessly integrate works with Jira, GitHub, and OneTrust. 

Pros:

• Realistic, industry-specific attack simulations
• Certified pentesters
• A wide range of pentest services

Cons:

• It may not suit every business
• No ongoing vulnerability scanning after the pentest

5. BreachLock

BreachLock, founded in 2019 and headquartered in New York, NY,  is a pentesting company specializing in AI-augmented penetration testing. Featured in Gartner Hype Cycle, its PTaaS model combines automation with expert penetration testing to spot vulnerabilities across web applications, cloud, and networks.

The platform allows scanning behind logins, integrates with Jira, Slack, and Trello, and supports compliance with SOC 2, PCI DSS, HIPAA, and ISO 27001.

It offers expert remediation support and tailored vulnerability management.BreachLock is best suited for organizations seeking ongoing, AI-driven pentesting with compliance-ready insights.

Pros:

• Regular updates with new risk checks keep security testing relevant
• Continuous comprehensive penetration testing
• Scalable platform for managing vulnerabilities across growing environments
• Unified dashboard 

Cons:  

• Documentation can improve

6. Secureworks

Secureworks is a well-established Managed Security Services Provider (MSSP). It specializes in penetration testing across web, mobile, networks, and APIs while also delivering services like application security testing, malware detection, and incident response.

It can seamlessly connect with AWS, Slack, and Jira. Secureworks provides enterprises with scalable security solutions tailored to complex environments.

Pros:

• Narrative reports and executive-level summaries
• Powerful analytics engine
• Broad range of security services that go beyond pentesting

Cons:

• Not suitable for SMEs

7. Synack

Founded by two NSA officials in 2013, Synack is counted among top penetration testing companies in the US. It’s a California-based penetration testing company that has a global network of over 1,500 vetted pentesters. It provides scalable, on-demand security in various domains, such as web, mobile, API, cloud, and AI systems.

Synack has an impressive list of clients ranging from Fortune 500 companies to government agencies like the US.

Pros:

• Rapid deployment and global access to testers
• Wide range of skills and perspectives
• Cost-effective
• Helps in compliance 

Cons:

• Pricing is not transparently disclosed 
• Geared towards enterprise clients

8. CrowdStrike

Reputed as a leading penetration testing company in the US, CrowdStrike is known for its protection solutions and Falcon. It focuses on real-time threat detection and response. It provides penetration testing services that test IT environments against real-world attack techniques and tactics.

CrowdStrike has designed pentesting services to help organizations identify hidden gaps and improve overall cyber resilience. 

It has an impressive list of Fortune 500 companies that trust them for global incident response. 

Pros:

• Integrated EDR, XDR, threat intelligence
• Robust 24/7 managed detection
• Offers retesting to verify remediation

Cons:

• Pricing on the higher side

9. Intruder

Intruder is counted among prominent players in cloud-based vulnerability scanning, attack surface management, and penetration testing services.The Intruder platform continuously discovers and prioritizes security weaknesses across networks, cloud environments, and applications. It helps organizations focus on the most critical fixes. 

The company is CREST-accredited for vulnerability assessment and penetration testing, and serves over a wide range of customers globally. 

Pros:

• Fast, automated scanning catches common vulnerabilities swiftly
• Easy-to-use platform suitable for non-experts and IT teams alike
• Ongoing monitoring

Cons:

• Needs clear and transparent pricing

10. NetSPI

NetSPI delivers deep, manual penetration testing by expert security professionals to large enterprises and banks. It focuses on spotting complex, hidden vulnerabilities that automated tools miss. NetSPI offers custom penetration testing services as per client’s needs. It’s known for business-focused reports and actionable remediation guidance.

Pros:

• In-depth, expert-led testing
• Customized assessments for complex scenarios
• Clear reporting and actionable recommendations
• 24/7 customer support 

Cons:

• Premium pricing may be too high for small businesses

11. Qualysec

Qualysec provides manual and automated penetration testing across web, mobile, cloud, and IoT platforms. It has a significant US client base with detailed risk assessments and compliance-focused testing capability.

Qualysec offers flexible engagement models fit a range of industries, from finance to healthcare. Its team is experienced in technical and compliance aspects of cybersecurity.

Pros:

• Broad testing coverage for diverse technologies and platforms
• Detailed, actionable reports with remediation guidance
• Flexible engagement options tailored to client needs

Cons:

• No transparent pricing

12. Astra Security

Astra Security blends automated scanning with manual testing to create a developer-friendly pentesting platform. Astra integrates with CI/CD pipelines for seamless security in agile development. Astra focuses on continuous vulnerability detection, helping clients fix issues fast and maintain compliance. 

The platform is user-friendly and accessible for organizations aiming to embed security into their software lifecycle.

Pros:

• Blend of automated and manual testing 
• Easy integration into DevOps workflows 
• Continuous scanning for early and ongoing risk detection

Cons:

• Lacks the deep expertise of boutique, hands-on manual testers

13. FireEye (Trellix)

FireEye, now part of Trellix, delivers penetration testing as part of a broader advanced threat protection suite. It combines automated and manual testing, threat intelligence, and incident response, targeting large enterprises and government agencies.

Trellix is recognized for its threat detection capabilities and real-time defense against sophisticated attacks, making it a trusted partner for organizations facing high-profile cyber risks.

Pros:

• Integrated threat detection, intelligence, and pentesting services
• Trusted by government and enterprise for high-stakes security
• Rapid response to emerging threats and vulnerabilities

Cons:

• Pricing information not clearly provided

14. PacketLabs

PacketLabs specializes in advanced, expert-led manual penetration testing, with a focus on regulatory compliance and zero false positives. The Canadian firm serves a large number of US clients with in-depth assessments that go beyond automated scanning. 

PacketLabs follows a methodical and creative approach to ensure vulnerabilities are verified and prioritized. They are popular among organizations that require rigorous validation of their security controls.

Pros:

• Expert manual testing 
• Strong focus on compliance and regulatory requirements
• Custom, creative approaches to uncover overlooked risks

Cons:

• Relatively smaller team size

15. Mandiant

Mandiant, an industry leader in advanced cybersecurity, offers deep, targeted penetration testing for enterprises and government agencies. It simulates sophisticated real-world attacks, using up-to-date threat intelligence from actual incident investigations. Mandiant’s approach is highly customized, focusing on web, cloud, mobile, and network environments.

Mandiant provides detailed remediation guidance and helps organizations build stronger, long-term cyber resilience. 

Pros:

• Customized, intelligence-driven penetration tests
• Expert teams deliver actionable insights
• Broad coverage includes cloud, IoT, and critical infrastructure

Cons:

• Pricing info not available

Factors to Consider When Choosing a Penetration Testing Company in the USA

You should try to gain clarity about your own security landscape. Define what you truly need, whether it’s testing for IoT-connected systems in manufacturing, web application security, or network defenses. Without this groundwork, even the best provider won’t deliver results that matter.

• The quality of services offered should be examined with care. Certifications such as OSCP, CEH, or CISSP indicate professional expertise, but they’re not enough on their own.
• Look deeper into whether the firm has worked with U.S. compliance requirements and if they follow recognized standards like OWASP, NIST SP 800-115, or CREST. 
• Evaluating experience with diverse testing approaches:black box, grey box, and white box—can make a significant difference.
• Capabilities set apart a strong partner from an average one. Providers that blend manual and automated testing, enable CI/CD integration, and deliver ongoing assessments show readiness for modern security challenges.
• Ask for sample reports to see if findings are clear, prioritized, and actionable. Case studies, references, and strong data-handling policies further signal credibility.

Finally, cost must be weighed against value. What matters most is whether the pricing package covers detailed testing, reporting, remediation, and compliance. Choosing solely on price, especially the lowest one, may later prove costly.

Conclusion

Selecting a trusted and experienced penetration testing partner is one of the best ways to ensure your systems are tested properly. The above list of top penetration testing companies in the USA can guide you in making the right choice.

Ignoring vulnerabilities can put your business at serious risk. Get in touch with us to see how we can uncover and fix vulnerabilities in your web applications before attackers find them.