API Penetration Testing Services
Kroll’s certified pen testers find vulnerabilities in your APIs that scanners simply can’t identify. Protect your business and keep sensitive data secure by leveraging our knowledge and experience in testing modern API infrastructures.
Talk to an ExpertAPI Penetration Testing: Why Should You Care?
APIs are ubiquitous across modern application environments, making them an enticing target for bad actors looking to compromise other systems or pivot within your networks. A focused API penetration testing program looks for vulnerabilities in how your APIs are designed, implemented and configured to prevent attackers from using APIs as an access point to get a foothold in your organization.
How Much Risk Can APIs Expose You To?
APIs regularly handle a large volume of sensitive data, such as payment card industry (PCI) and personal identifiable information (PII) and are also an access point further into your environment. Untested APIs can leave the door wide open for unauthorized access and data exfiltration — data scraping is one example of how attackers can gain access, unnoticed, to sensitive data. It is essential for APIs to be tested regularly to catch these issues before your business is exposed.
Common Vulnerabilities API Pen Testing Can Detect
- Insufficient Security Configuration
- Authentication and Authorization Challenges
- HTTP Header Injection
- Input Validation Errors
- Insufficient Logging
Pulling Back the Curtain: API Pen Testing Tools and Expert Insight
Kroll regularly works with large enterprise organizations in highly regulated industries to structure, manage and execute API penetration testing programs.
We have developed a granular approach that goes beyond what scanners and testing tools can uncover on their own. We provide both coverage and depth, looking at not just what is happening on the front end, but using expert inference to deduce what is going on in the back end as well.
As added value, our program managers and technical leads keep your project on track and focused on the areas of most risk and of most importance to your overall business.
What Our Team Brings to the Table

100,000+ Hours of Security Testing and Assessment Work Every Year
Kroll’s world-class penetration testing services are built on thousands of hours of cyber security assessments, extensive front-line intelligence and a team of certified cyber experts — the foundation for our sophisticated and scalable approach.

100+ Security Certifications across Cyber Risk, Privacy, Offensive Security, Cloud and Hybrid Systems
Our team brings the depth and breadth of expertise needed to tackle complex cyber risk challenges across your environments, whatever your industry.

3,000+ Incident Response Cases Handled Worldwide Every Year
Kroll's DNA as incident response leader expands our assessments beyond compliance mandates to provide actionable remediation based on frontline threat intelligence.
Our 6-Phase API Pen Testing Process
Looking for Other Penetration Testing Services?
- Web Application Penetration Testing
- Mobile Penetration Testing
- Cloud Penetration Testing
- Agile Penetration Testing
- Network Penetration Testing
- IoT and Hardware Device Penetration Testing
- Container Security
Agile Pen Testing: A New Paradigm for Application Security
Agile pen testing, or continuous pen testing, is a method for integrating regular testing into your software development lifecycle (SDLC), rather than testing at infrequent points in time.
Whereas, traditional pen testing impacts product release cycles, Agile pen testing works with your release schedule to ensure that new features are secure and don’t translate into risk for your customers.
Learn More About Kroll’s Approach to Agile Pen Testing

Get Started on Your Agile Pen Testing Program with the eBook. Download now.
We’re Certified to the Highest Global Industry Standards
Start Testing Your APIs Today
Get in touch with our team to learn how we can help you build an API pen testing program specific to your organization’s needs.
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Cyber Risk
Incident response, digital forensics, breach notification, managed detection services, penetration testing, cyber assessments and advisory.
Penetration Testing Services
Validate your cyber defenses against real-world threats. Kroll’s world-class penetration testing services bring together front-line threat intelligence, thousands of hours of cyber security assessments completed each year and a team of certified cyber experts — the foundation for our sophisticated and scalable approach.
Web Application Penetration Testing Services
Assess the design, configuration and implementation of your web apps for critical vulnerabilities. Kroll’s scalable pen testing services consider the business case and logic of your apps, providing more coverage and an optimized program based on risk.
Agile Penetration Testing Program
Integrated into your software development lifecycle (SDLC), Kroll’s agile penetration testing program is designed to help teams address security risks in real time and on budget.
Cloud Penetration Testing Services
Kroll’s team of certified cloud pen testers uncover vulnerabilities in your cloud environment and apps before they can be compromised by threat actors.
Application Security Services
Kroll’s product security experts upscale your AppSec program with strategic application security services catered to your team’s culture and needs, merging engineering and security into a nimble unit.
Red Team Security Services
Red team security services from Kroll go beyond traditional penetration testing, leveraging our frontline threat intelligence and the adversarial mindset used by threat actors to push the limits of your information security controls.
Application Threat Modeling Services
Kroll helps development teams design and build internal application threat modeling programs to identify and manage their most pressing vulnerabilities.
Cyber Risk Retainer
Kroll delivers more than a typical incident response retainer—secure a true cyber risk retainer with elite digital forensics and incident response capabilities and maximum flexibility for proactive and notification services.