API Security Testing & Web Services Audit
Harden REST, GraphQL, gRPC, and SOAP endpoints against unauthorized data exposure, Broken Object Level Authorization (BOLA), mass assignment, and bot attacks. Rigorous automated fuzzing combined with deep manual business logic penetration testing.
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6 Core Pillars of Enterprise API & Microservices Security
Our certified penetration testers uncover API authorization bypasses, data leakage vectors, and business logic flaws across complex microservice architectures.
BOLA & Authorization Flaws
Deep testing for Broken Object Level Authorization (OWASP API1) and IDOR parameter tampering across user records, account balances, and tenant IDs.
- Object ID parameter manipulation testing
- Multi-tenant database boundary verification
- Function level authorization (BFLA) checks
JWT, OAuth2 & Auth Tokens
Auditing JSON Web Tokens for weak HMAC secrets, `alg: none` signature bypasses, token expiration flaws, and OAuth2 redirect URI manipulation.
- JWT cryptographic signature & key audit
- Token replay & session fixation prevention
- OAuth2 grant type & PKCE validation
Mass Assignment & Data Leaks
Testing payload parameter injection (e.g. injecting `role: admin`, `verified: true`) and inspecting API JSON responses for exposed sensitive PII.
- Object property injection & mass assignment
- Excessive JSON response field pruning
- Verbose backend error stack trace detection
Rate Limiting & Anti-Automation
Testing endpoints for lack of throttling, brute-force OTP bypasses, credential stuffing vulnerabilities, and SMS/Email toll fraud exploitation.
- OTP & login endpoint rate limiting
- Financial API anti-scraping controls
- Webhook retry & DoS prevention
SSRF & Webhook Injection
Evaluating URL ingestion parameters for Server-Side Request Forgery vulnerabilities targeting cloud metadata endpoints and internal microservices.
- Cloud metadata service (`169.254.169.254`) protection
- Internal VPC microservice port pivoting
- Webhook signature HMAC verification
Shadow API & Swagger Audit
Comparing active traffic against Swagger / Postman documentation to uncover undocumented shadow routes, legacy v1 APIs, and debug backdoors.
- Undocumented shadow API discovery
- Deprecated v1/v2 endpoint deprecation audit
- API Gateway WAF policy validation
5-Stage API Penetration Testing Methodology
Our offensive testing approach simulates malicious API consumers to verify endpoint resilience and eliminate authorization flaws.
Contract Parsing & Role Setup
Ingesting OpenAPI/Swagger JSON files, Postman collections, and setting up multi-tenant test accounts across different authorization levels.
Input Validation & Boundary Testing
Executing automated schema fuzzing engines to test parameter data types, HTTP method tampering (GET, POST, PUT, DELETE), and header injections.
Business Logic & Authorization Bypass
Ethical hackers manually swap IDs, manipulate JWT tokens, test concurrent transaction states, and probe for multi-step workflow logic bypasses.
Reproduction Scripts & Code Patches
Delivering CVSS v3.1 scored reports with curl reproduction commands, sample patch code snippets, and conducting an interactive debrief with backend engineers.
Safe-to-Host Sign-Off & Certificate
Re-evaluating patched API endpoints and issuing the official Lumiverse CERT-In compliant Safe-to-Host Security Attestation Certificate.
Frequently Asked Questions
Key details on API documentation requirements, testing safety, and GraphQL support.