CyberSekCyberSek
API Penetration Testing

APIs Are The
New Attack
Surface.

91% of organisations had an API security incident in 2023. We test REST, GraphQL, and gRPC for BOLA, broken auth, mass assignment, rate limiting gaps, and every OWASP API Top 10 vulnerability.

Get a Quote
91%
Had API Breach (2023)
REST + GraphQL
+ gRPC Tested
OWASP API
Top 10 Covered
Live Burp Suite Repeater — Click tabs 1-4 to see different attacks, then click SEND
Burp Suite Pro — Repeater
Normal request — your ordersGET 200
REQUEST
GET /api/v1/users/1001/orders HTTP/1.1
Host: target-api.com
Authorization: Bearer eyJhbGc...USER_TOKEN
Content-Type: application/json
RESPONSE
Click SEND →
OWASP API Security Top 10 — 2023

Every API Attack Covered

API1

Broken Object Level Auth

CVSS 9.1

The most common API vulnerability. Attackers manipulate object IDs to access other users' data. Your authorisation logic must verify the requesting user owns the resource — every single time.

Test Cases
IDOR on all object IDs
UUID vs sequential ID testing
Parameter pollution
HTTP method override
Nested object traversal
GraphQL resolver auth
Methodology

The API VAPT Process

PHASE 01

API Discovery

We find every API endpoint — documented and undocumented. JavaScript analysis, mobile app decompilation, Wayback Machine, Google dorking, and forced browsing with custom wordlists.

Tools & Techniques
JS Link Finder
gau
waybackurls
ffuf
Burp Crawler
mobile app decompilation
FAQ

API Security Questions

Do you need our API documentation to start testing?
Can you test GraphQL and gRPC APIs, not just REST?
How do you test APIs that require authentication?
What environments do you test against?
How long does an API VAPT take?
Do you test third-party APIs integrated in our product?
⚡

Secure Your APIs

Share your Swagger/Postman collection and we'll start testing within 48 hours of agreement.

Book Free Scoping Call ← All VAPT