# API Security Testing

> REST, GraphQL & microservice security to OWASP API Top 10.

APIs are today's primary attack surface. We test REST, GraphQL and microservice APIs for broken authorization, excessive data exposure, injection and rate-limit abuse - mapped to the OWASP API Security Top 10.

## Outcomes

- Broken object/function-level authorization (BOLA/BFLA)
- Excessive data exposure & mass assignment
- Injection, SSRF and rate-limit abuse
- Auth flow and token handling review

## Process

01. **Spec review** - We ingest your OpenAPI/GraphQL schema and map the surface.
02. **Auth testing** - Authentication, authorization and token handling probing.
03. **Abuse testing** - Injection, data exposure, SSRF and rate-limit attacks.
04. **Report** - Findings with PoCs and remediation, plus re-test.

## Deliverables

- OWASP API Top 10 mapped report
- PoC evidence and exploit chains
- Remediation and re-test

## Standards

OWASP API Top 10, OWASP WSTG


## Overview

APIs form the backbone of modern web, mobile, and cloud-native architectures, representing the single largest target for data exfiltration. Traditional firewalls and web scanners are ineffective at detecting logical flaws, authorization bypasses, and data exposure within API endpoints.

Our API security testing targets the OWASP API Security Top 10. We ingest your OpenAPI, Swagger, or GraphQL schemas to map out the entire endpoint surface, manually testing for broken object-level authorization (BOLA), mass assignment, rate-limiting gaps, and complex injection vectors, ensuring your integration layer is robust.


## What we cover

### BOLA & BFLA
Probing for Broken Object Level and Broken Function Level Authorization to access unauthorized resources.

### Mass Assignment
Attempting to update restricted object properties (e.g., isAdmin) via input payload tampering.

### GraphQL Specifics
Testing for query depth/complexity attacks, batching abuse, and schema introspection exposure.

### Rate Limiting & DoS
Attempting API exhaustion, resource-intensive queries, and scanning for missing request thresholds.

### Authentication & JWT
Probing token signature validation, algorithm switching, expiration checks, and session tokens.

### SSRF & Data Injection
Probing parameters for Server-Side Request Forgery and malicious database query injections.


## FAQ

**Do you test GraphQL specifically?**
Yes - introspection abuse, query depth/complexity, batching attacks and authorization at the resolver level.

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