Top 10 Web Application Penetration Testing Services Providers in USA
This guide lists ten providers of web application penetration testing in the US, with CyberSapiens first. Every claim comes from the provider’s own website, so accreditations are shown as “states”, not confirmed. Choose by what you need tested and what your customers or auditors expect, then check authenticated testing, manual depth, a sample report and a retest before you sign.
Web application penetration testing is an authorized attempt to find and exploit weaknesses in a web application, such as broken access control, injection or flawed login and session handling, so they can be fixed before an attacker finds them. It goes beyond a scan because a tester confirms what can really be exploited and shows the impact.
A single data exposure through a web application can reach customers, auditors and insurers at once. That is why many US buyers ask suppliers for a recent independent test report. This page explains what a good test covers, which US rules and frameworks come up most, and who offers the service.
This is not a ranking. We have not tested these firms. After CyberSapiens, the order is alphabetical.
The Providers
CyberSapiens is listed first as the publisher of this page. The other nine follow in alphabetical order. Each entry states what the provider’s own page says, and “Check” notes what we could not see.
1. CyberSapiens
CyberSapiens is a cybersecurity consultancy based in Melbourne with a USA office in Sheridan, WY, and offices in Canada and India. Its web application testing covers the OWASP Top 10 categories, including injection, authentication flaws, access control and business logic, using automated and manual testing.
States: ISO 27001:2022 certification; work aligned with OWASP, PTES and NIST SP 800-115; CVSS-rated findings with proof of concept; a free re-test on every engagement.
Note: CyberSapiens does not hold CREST status. Where a contract requires it, choose a firm that does. See web application VAPT.
2. Bishop Fox
Its page lists web, thick-client, e-commerce, single page applications and APIs, with testing that goes beyond the OWASP Top 10. It combines automation with manual review, starts with a mapping of the attack surface, and says retesting is included.
States: reports with the exploitation path and business impact, plus separate executive and technical reports; FS-ISAC and Health-ISAC alliance memberships.
Check: the page does not state a headquarters or a company-level accreditation.
3. Cobalt
Cobalt describes a pentest-as-a-service model delivered by a vetted community of testers, with black-, grey- or white-box testing. It says its methodology is informed by the OWASP ASVS and Top 10, and that retesting is available within a 7-day SLA.
States: steps to reproduce and remediation guidance for every finding; integrations with tools such as Jira and GitHub.
Check: its page does not state a headquarters or any accreditation, and part of its offer is autonomous testing, so ask which parts are human-led.
4. Kroll
Kroll says its web application testing is manual and human-directed, starting with each application’s business logic, and covers injection, authentication, misconfiguration and application logic flaws with coverage for the OWASP Top 10.
States: a final assessment after each testing phase; findings validated through QA and technical review.
Check: the page we read does not mention retesting or name a specific accreditation.
5. NetSPI
NetSPI splits web testing into authenticated testing with several user roles and anonymous testing, and covers APIs, mobile apps, thick clients and virtual apps. It names the OWASP web and mobile Top 10s.
States: findings prioritized by exposure, impact and exploitability, with remediation testing listed as a platform feature.
Check: the page gives no timelines or sample report, so ask for both.
6. Optiv
Optiv lists web application security within its penetration testing and offers application assessments and mobile app assessments, combining manual and automated work.
States: its own claim that 75% of vulnerabilities its team exploited were not found by standard automated tools.
Check: the page we read names no standards, deliverables or retest terms, so ask for them.
7. Packetlabs
A Toronto-headquartered firm with offices in San Francisco and Sydney. It says its testers manually test web apps, APIs, mobile apps, AI/LLM systems and thick clients, focusing on authentication, authorization and business logic.
States: CREST accreditation and SOC 2 attestation (the logos link to supporting pages), and a sample application report.
Check: its page does not mention retesting or name a testing standard.
8. Rapid7
Its web application penetration test brief names OSSTMM and PTES, uses the OWASP testing methodology as its foundation, and rates findings with DREAD, with an actionable findings matrix.
Check: the brief is undated, mentions no retest and lists no accreditations, so confirm current scope, terms and credentials.
9. Trustwave
Trustwave’s service brief describes gray box testing that combines manual and automated work, covers web applications, web services and thick clients, and maps its methods to OWASP standards.
States: it is available to retest vulnerabilities found.
Check: the brief lists no accreditations, so ask for them.
10. Vumetric
Vumetric uses the OWASP standard as a baseline and the MITRE ATT&CK framework, and tests business logic, API interactions, authentication and session management. It has offices in Las Vegas and Toronto.
States: an executive summary, a technical report and an attestation document, plus remediation testing; ISO 9001 certified processes and staff credentials such as OSCP and GPEN (its own claims).
What Web Application Testing Covers
The OWASP Top 10:2021 is a common starting list of web application risks, and the OWASP Web Security Testing Guide (stable version 4.2 when we checked) gives detailed test procedures. OWASP publishes guidance, not a compliance standard, so a report cannot be “OWASP compliant” in the way an audit result is.
A01 Broken access control
A user reaches data or functions that belong to someone else.
A02 Cryptographic failures
Sensitive data exposed through weak or missing encryption.
A03 Injection
Untrusted input changes a query or command, such as SQL injection or XSS.
A04 Insecure design
Flaws in how the application is designed, not only how it is coded.
A05 Security misconfiguration
Default settings, open admin pages or verbose errors.
A06 Vulnerable and outdated components
Libraries and frameworks with known weaknesses.
A07 Identification and authentication failures
Weak login, password reset or session handling.
A08 Software and data integrity failures
Unsafe updates, pipelines or deserialization.
A09 Security logging and monitoring failures
Attacks that go unlogged or unnoticed.
A10 Server-side request forgery
The server fetches a URL an attacker controls.
A good test goes beyond the list. It uses several user roles to find access control flaws, tests business logic that scanners cannot judge, and covers the APIs behind the front end. Ask how many roles are covered and whether testing is authenticated.
How a Test Runs With CyberSapiens
Our work is aligned with OWASP, PTES and NIST SP 800-115. A typical web application test follows these steps.
1. Scope and authorization
We agree which applications, environments and user roles are in scope, what is excluded, and get written approval before testing starts.
2. Mapping
We map pages, functions, APIs and user roles to understand the attack surface.
3. Automated scanning
Tools check for known issues and misconfigurations quickly.
4. Manual testing
Testers go after authentication, session handling, access control, input handling and business logic.
5. Reporting
The report ranks each finding with CVSS, with evidence, proof of concept and fix guidance.
6. Retest
We retest after your team fixes the issues, at no extra charge.
Learn more about our VAPT services. We do not hold CREST status.
US Rules and Frameworks
No single US law requires every business to run a web application penetration test. These are the points that most often drive the decision.
PCI DSS
If you handle payment card data, PCI DSS expects penetration testing. The PCI Security Standards Council guidance says penetration tests are done at least annually and after significant changes, are largely manual, and cannot be met by running an automated tool alone. Testers must be organizationally separate from the team that runs the target systems.
Source: PCI SSC Penetration Testing Guidance, a 2015 supplement that does not replace the standard. Check the current PCI DSS text with your assessor.
HIPAA Security Rule
The HIPAA Security Rule requires covered entities to conduct an accurate and thorough risk analysis and to perform periodic technical and nontechnical evaluations. HHS guidance does not name penetration testing as a requirement and points to NIST SP 800-115 as a resource.
Note: testing can support your risk analysis, but it does not replace it.
NIST SP 800-115
NIST’s Technical Guide to Information Security Testing and Assessment describes testing techniques and how to plan and run tests. It was published in 2008.
Use it as: a foundation for planning, not as a current checklist.
Customers and insurers
US customers, auditors and cyber insurers often ask suppliers for a recent independent test report in security questionnaires and contracts.
Do: ask each customer or insurer what evidence they accept before you buy.
This section is general information, not legal advice. Check current requirements and take advice for your situation.
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.
Web Application Penetration Testing in the USA: Frequently Asked Questions
What is web application penetration testing?
It is an authorized attempt to find and exploit weaknesses in a web application, such as broken access control or injection, so they can be fixed. It confirms what can really be exploited, which a scan alone cannot.
How is it different from a vulnerability scan?
A scan lists known weaknesses, usually with automated tools. A penetration test is largely manual and shows which weaknesses can be exploited and what an attacker could reach.
Does PCI DSS require web application penetration testing?
If you handle payment card data, PCI DSS expects penetration testing. PCI SSC guidance says tests are done at least annually and after significant changes, are largely manual, and cannot be met by an automated tool alone. Check the current text with your assessor.
Does HIPAA require penetration testing?
The HIPAA Security Rule requires a risk analysis and periodic evaluations but HHS guidance does not name penetration testing. Testing can support your risk analysis.
What is the OWASP Top 10?
It is a list of the most critical web application security risks. The 2021 edition covers broken access control, cryptographic failures, injection, insecure design, security misconfiguration, vulnerable components, authentication failures, integrity failures, logging failures and server-side request forgery. It is guidance, not a compliance standard.
How often should we test?
At least annually and after significant changes is a common practice, and PCI SSC guidance says the same. Your customers, insurers or contracts may set their own frequency.
What should we give the testers?
Written authorization, the list of applications and environments, test accounts for each user role, API documentation and a named contact. Better inputs mean better coverage.
How much does it cost, and how long does it take?
It depends on the number of applications, pages, user roles and API endpoints, the depth of manual work and retesting. Ask for a quote and timeline against a written scope.
Ready to Test Your Web Application?
Talk to CyberSapiens about scope, authorization and retesting for your web application. 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
