Web Application Penetration Testing

Your Web App Has Vulnerabilities Scanners Can't Find

Your Web App Has Vulnerabilities Scanners Can't Find

Red Sentry testers manually test your authentication, authorization, APIs, and business logic, the flaws automated scanners miss.

Red Sentry testers manually test your authentication, authorization, APIs, and business logic, the flaws automated scanners miss.

Human-led testing: Experienced testers exploit and confirm findings by hand, with tools used for discovery.

Reports that support your auditor: Evidence, severity, and remediation steps that support SOC 2, HIPAA, PCI DSS, and ISO 27001 reviews.

Retest included: After you fix, we retest and confirm each finding is closed.

Fill out the form to book a scoping call with a security expert. We’ll help define your requirements and pricing.

Fill out the form to book a scoping call with a security expert. We’ll help define your requirements and pricing.

Trusted by Companies That Can’t Afford Mistakes

1000+

Security assessments conducted

25,000+

Vulnerabilities discovered

4.8

on G2

4.8

on Capterra

Customer ratings

Why Web App
Pentesting Matters

Modern web applications rely on complex APIs, authentication flows, and third-party integrations.

Automated scanners miss logic flaws and chained vulnerabilities.

Red Sentry tests the way attackers actually target your users.

Why Security Leaders Choose Red Sentry

for Web Application Penetration Testing

Jira integration that works – Findings become actionable tickets with CVEs and reproduction steps.

Reports for people and auditors – Executive dashboards, technical deep-dives, and CSV exports.

Evidence for your compliance reviews – Testing that supports SOC 2, HIPAA, PCI DSS, and ISO 27001 reviews, scoped to your environment.

Manual validation, not scanner output – A finding is not reported until a tester confirms it.

Clear scoping –Scope and price are agreed before testing starts. See how scoping works.

Compliance-Ready Reports

Every finding includes evidence, severity, and remediation guidance. Findings support your SOC 2, HIPAA, PCI DSS and ISO 27001 reviews.

Every finding includes evidence, severity, and remediation guidance. Findings support your SOC 2, HIPAA, PCI DSS and ISO 27001 reviews.

AICPA SOC badge
AICPA SOC badge

Red Sentry has completed a SOC 2 Type II examination.

Red Sentry has completed a SOC 2 Type II examination.

Our Web App Testing Covers:

  • Authentication and session management

  • Access control and authorization

  • Injection and cross-site scripting

  • Business logic flaws

  • Sensitive data exposure

  • APIs and integrations that are part of the application, including SSO configurations

  • OWASP Top 10 vulnerabilities and beyond

Testing is human-led, with tools assisting discovery. Every finding is manually validated. Methodology follows OWASP and NIST guidance.

You're in Good Hands

  • “The Red Sentry team was able to deliver quick, but thorough, results for my business. Their responsiveness and findings were critical in closing a new client engagement. I am looking forward to working with them in the future.”

    Craig Serold | Partner

  • "Complete satisfaction. Nothing less. From concept to conclusion, you are in great hands throughout the entire process."

    Douglas G. | CEO

  • “Seamless, constructive, efficient. They are always quick to respond to customers and very easy to work with regarding scheduling.”

    Ryan M. | Director of Sales

  • “Very good. They provided recognized credibility and gave us a clean bill of health on issues we had resolved.”

    David N. | Leader of Client Delight

How it works?

Scoping call

A security expert reviews your environment with you. We agree scope and send a proposal.

Testing is scheduled

Once scope is approved, we schedule testing with your team.

We test by hand

Human testers manually validate every finding. Confirmed findings appear in your Red Sentry portal.

Report and retest

You receive a report with evidence, severity, and remediation guidance, plus a retest of your fixes.

See how simple Web Application Testing can be.

Book your complimentary scoping call today.

Fill out the form to book a scoping call with a security expert. We’ll help define your requirements and pricing.

Frequently Asked Questions

Do you test multi-tenant SaaS applications?

Yes. We test for access control flaws, misconfigurations, and logic issues that could let one tenant see another tenant's data.

Can you test our APIs and integrations?

Yes. We test REST and GraphQL APIs for authentication flaws, broken authorization, injection, and data exposure, including APIs that are part of your web application.

Will testing disrupt our application?

We agree timing and rules of engagement with your engineering team before testing starts, and testing is designed to minimize disruption.

Can a vulnerability scan replace a web application pentest?

No. A scan flags potential weaknesses. A pentest is human-led: a tester manually validates findings and shows the real business risk, including logic and authorization flaws scanners rarely catch.

Does a web application pentest support SOC 2 or ISO 27001?

It is one of the technical tests these frameworks commonly call for, depending on your environment. We help you decide which tests fit, and the report gives your auditor technical evidence to review.

What is in the report?

Prioritized vulnerabilities with evidence, reproduction steps, remediation guidance, and a retest of your fixes.

How is pricing determined?

Pricing depends on the size and complexity of your application and is set during the scoping call.

You're in Good Hands

  • “The Red Sentry team was able to deliver quick, but thorough, results for my business. Their responsiveness and findings were critical in closing a new client engagement. I am looking forward to working with them in the future.”

    Craig Serold | Partner

  • "Complete satisfaction. Nothing less. From concept to conclusion, you are in great hands throughout the entire process."

    Douglas G. | CEO

  • “Seamless, constructive, efficient. They are always quick to respond to customers and very easy to work with regarding scheduling.”

    Ryan M. | Director of Sales

  • “Very good. They provided recognized credibility and gave us a clean bill of health on issues we had resolved.”

    David N. | Leader of Client Delight

You're in Good Hands

  • “The Red Sentry team was able to deliver quick, but thorough, results for my business. Their responsiveness and findings were critical in closing a new client engagement. I am looking forward to working with them in the future.”

    Craig Serold | Partner

  • "Complete satisfaction. Nothing less. From concept to conclusion, you are in great hands throughout the entire process."

    Douglas G. | CEO

  • “Seamless, constructive, efficient. They are always quick to respond to customers and very easy to work with regarding scheduling.”

    Ryan M. | Director of Sales

  • “Very good. They provided recognized credibility and gave us a clean bill of health on issues we had resolved.”

    David N. | Leader of Client Delight