API Security Testing
Typical delivery
3–5 business days
Why this matters
APIs are the connective tissue of AI products — and the most common breach path. We test against the full OWASP API Top 10 across up to 20 endpoints.
BOLA, broken authentication, mass assignment, and rate-limit evasion are exercised by hand, with HTTP-level evidence for every finding.
How Vynox tests
- Broken object-level authorization (BOLA) testing
- Authentication and token handling attacks
- Mass assignment and excessive data exposure
- Injection flaws across REST and GraphQL
- Rate-limit evasion and resource exhaustion paths
What's at stake if this goes untested
Horizontal data access
One customer's token reads another customer's records.
Privilege escalation
User-level keys reach admin-only functionality.
Data scraping
Weak rate limits let attackers bulk-extract your data.
AI pipeline exposure
Compromised APIs feed poisoned data to your models.
Frequently asked questions
What is BOLA and why does it matter?
Broken object-level authorization (BOLA) is the #1 API vulnerability — it lets one user's token access another user's records by manipulating object IDs. It is extremely common and directly exploitable, so we test it exhaustively across every endpoint.
Do you test both REST and GraphQL APIs?
Yes. We test the full OWASP API Top 10 across both REST and GraphQL, including authentication and token handling, mass assignment, excessive data exposure, injection, and rate-limit evasion.
Why test APIs separately from the web app?
APIs are the connective tissue of AI products and the most common breach path. They expose different vulnerabilities than the UI — direct object access, weak rate limits, and token flaws that the web front-end may hide.
Your AI Ships Fast. Attackers Move Faster.
Book a 30-minute call. We'll map your AI attack surface, scope the right engagement, and give you a clear picture of what an attacker would find — before they do.