API Security Testing at
The Hidden Finds

Identify and Fix Critical API Vulnerabilities Before Attackers Exploit Them.

At The Hidden Finds, we help startups and scaling companies identify real vulnerabilities in REST, GraphQL, and backend APIs through practical, hands-on security testing. Our focus is on finding exploitable weaknesses such as broken authorization, excessive data exposure, and business logic flaws before they become real security incidents.

What is API Security Testing?

API Security Testing is the process of identifying and validating security vulnerabilities in APIs, including REST and GraphQL endpoints. APIs are often the backbone of modern applications, making them a critical attack surface for attackers.

At The Hidden Finds, we test APIs for real-world vulnerabilities such as broken authorization (IDOR), excessive data exposure, insecure endpoints, and business logic flaws. Our approach focuses on identifying exploitable weaknesses that could lead to unauthorized access, data leaks, or account compromise.

We don’t just scan APIs — we manually test authentication flows, request handling, and access controls to uncover issues that automated tools often miss.

How We Test APIs for Real Vulnerabilities

Our API Security Testing Methodology

We use a combination of manual testing and targeted techniques to identify real-world API vulnerabilities that automated scanners often miss:

  • Testing for broken authorization (IDOR) across endpoint
  • Analyzing authentication and session handling flaws
  • Identifying excessive data exposure in API responses
  • Testing GraphQL queries and mutations for access control issues
  • Validating business logic vulnerabilities and abuse cases

Our approach focuses on identifying exploitable vulnerabilities, not just theoretical issues — helping you understand real risk and fix it before attackers can take advantage.

Why Choose Our API Security Testing

Real Vulnerability Discovery

We focus on identifying real, exploitable API vulnerabilities such as IDOR, broken authentication, and business logic flaws — not just automated scan results or false positives.

Manual + Deep Testing Approach

Our testing goes beyond automated tools. We manually analyze API behavior, authentication flows, and access controls to uncover hidden vulnerabilities that scanners typically miss.

Actionable Security Insights

We provide clear, developer-friendly reports with step-by-step reproduction and practical remediation guidance — helping your team fix issues quickly and effectively.

What You Get with Our API Security Testing

Our API security testing is designed to help you identify real vulnerabilities, understand their impact, and fix them efficiently. We focus on practical security outcomes — not just reports.

Ready to Test Your APIs for Real Vulnerabilities?

If you suspect security issues in your APIs or want a professional assessment, we can help. Get a focused API security review with clear findings, real impact analysis, and actionable fixes.

Our Clients

Best Trusted Cyber Security

We engaged Ehtesham and his team for an application and API security review, and the depth of testing exceeded our expectations. They identified high-impact vulnerabilities, explained the risks clearly, and provided practical fixes our team could implement quickly. A highly professional and valuable engagement.

Tyler

CTO

Frequently Asked Questions About API Security Testing

What is API security testing?

API security testing is the process of identifying and validating vulnerabilities in APIs, including REST and GraphQL endpoints. It focuses on real-world issues like broken authorization (IDOR), data exposure, authentication flaws, and business logic vulnerabilities.

We use a combination of both, but our primary focus is manual testing. Automated tools often miss critical business logic and authorization issues. Our approach is designed to uncover real, exploitable vulnerabilities that scanners typically overlook.

We identify vulnerabilities such as broken access control (IDOR), authentication and session flaws, excessive data exposure, insecure endpoints, and business logic issues that could lead to unauthorized access or data breaches.

No, our testing is carefully performed to avoid disruption. We follow safe testing practices and coordinate with your team when needed to ensure your production environment remains stable.

You will receive a clear, developer-friendly report with detailed vulnerability descriptions, step-by-step reproduction, risk impact, and actionable remediation guidance.

You can request an API security review through our contact form. We’ll assess your requirements and get back to you with the next steps.

Ready to Secure Your APIs Before Attackers Do?

APIs are one of the most targeted attack surfaces in modern applications. If you’re building or scaling a platform, now is the time to identify vulnerabilities before they are exploited.

We help startups and growing companies uncover real API security issues — including authorization flaws, data exposure, and business logic weaknesses — through practical, hands-on testing.

Get a focused security review with clear findings and actionable fixes.