What is API VAPT?
API Penetration Testing (VAPT) is the process of identifying security flaws in your backend services — such as RESTful or SOAP APIs — that could lead to unauthorized access, data leakage, or abuse of functionality. It focuses on validating authentication, authorization, data handling, and request logic.
Why API Security is Critical
APIs are the backbone of modern applications — powering everything from mobile apps to payments to internal integrations. A single vulnerable API can expose customer data, break compliance, or trigger a full-scale breach. API VAPT is essential to avoid data exposure, broken access control, and endpoint abuse — especially for regulated industries.
Our Methodology: How We Test APIs
Schema & Endpoint Discovery
Authentication & Token Testing (OAuth, JWT, etc.)
Access Control & Role Escalation Attempts
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Injection Attacks (SQLi, XML, Command Injection)
Rate Limiting, Replay, and Logic Abuse
Detailed Reporting + Retesting
We test both public and private/internal APIs, with or without documentation.
Common Vulnerabilities We Test
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Broken Object Level Authorization (BOLA)
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Broken Function Level Authorization (BFLA)
Mass assignment & parameter tampering
Insecure tokens & weak authentication
Rate-limit bypass & replay attacks
Sensitive data exposure in responses
Industries & Use Cases We Specialize In
- Fintech & Banking APIs (secure data flows, transaction tokens)
- SaaS & Multi-Tenant Backends
- Healthcare Integrations (FHIR, HL7)
- Logistics/Tracking Systems
- Government API gateways and Citizen Portals
Why Choose EINSHIELD for API VAPT?
- API-first expertise with real-world exploit testing
- Reporting aligned with SEBI, RBI, ISO, GDPR
- Fast delivery with post-test remediation support
- Performed by certified ethical hackers and compliance consultants
Frequently asked questions
Yes. We use fuzzing, reverse engineering, and traffic analysis to map undocumented endpoints.
Absolutely. We test OAuth2, JWT, basic auth, and custom token handling for flaws.
Yes. We simulate rate-limit bypass, replay, and logic abuse attacks.
Tests are safely executed in staging. If done in production, we avoid destructive payloads.
Yes — we provide step-by-step remediation guidance and one round of free retesting.