API Security Testing – Ensuring Secure and Reliable Data Exchange
API Security Testing focuses on identifying vulnerabilities and misconfigurations in Application Programming Interfaces (APIs) that could lead to unauthorized access, data leaks, or service disruptions. It ensures that APIs handling sensitive data remain secure, available, and resilient to modern attack vectors.
At Shieldbyte Infosec, we deliver comprehensive manual and automated API testing to evaluate authentication, authorization, input validation, rate limiting, and error handling mechanisms. Our experts simulate real-world attack scenarios to uncover flaws often overlooked in functional testing.
We help organizations safeguard their APIs from threats such as Broken Object-Level Authorization, Injection Attacks, and Sensitive Data Exposure, ensuring strong protection across REST, SOAP, and GraphQL interfaces. Shieldbyte Infosec enables businesses to build secure integration ecosystems, maintain compliance, and protect critical data exchange processes across internal and third-party APIs.
Our audit methodology is built around accountability, precision, and achieving compliance excellence
Our Approach
Scope Definition
Define API endpoints, environments, and data flows to establish clear testing boundaries.
Information Gathering
Collect documentation, tokens, and request-response samples for detailed analysis.
Authentication & Authorization Testing
Verify token management, role-based access, and privilege enforcement.
Input Validation & Fuzzing
Test input handling to identify injection points and improper sanitization.
Business Logic Testing
Evaluate workflow integrity and ensure secure request sequencing and transaction flow.
Error & Exception Handling Review
Analyze responses for sensitive information disclosure or improper error messages.
Rate Limiting & Session Control
Assess protection against brute-force, replay, and denial-of-service attempts.
Reporting & Recommendations
Provide a detailed report outlining vulnerabilities, impact, and remediation guidance.
Re-Testing & Validation
Confirm that all identified API vulnerabilities have been effectively mitigated.
Why Choose Shieldbyte Infosec?
CERT-In Empanelled
Recognized by the Government of India for security audits.
Proven Expertise
350+ clients across banking, IT, insurance, healthcare, and manufacturing.
End-to-End Support
From scoping to remediation and final certification.
Let’s Strengthen Your Cyber Defenses
Enhance protection, reduce risk, and support your growth objectives