API Security Testing

API assessments built around privilege boundaries, business logic, and the endpoints your product depends on most

We test customer APIs, partner integrations, internal endpoints, and orchestration layers to validate how access control, trust assumptions, and object handling behave in practice.

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What teams usually value in this service

BOLA and privilege-escalation focus

Partner and internal API coverage

Reproducible evidence with remediation notes

What is covered

Authentication and token validation logic
Object-level and function-level authorization
Mass assignment, over-posting, and unsafe mutation flows
Rate limiting, replay, and state confusion in transaction-heavy APIs
Hidden admin endpoints, internal APIs, and integration trust assumptions

Who this service is for

Engineering teams exposing customer, mobile, or partner APIs
Security teams concerned about authorization drift across services
Products with admin, internal, or hidden endpoints behind the same API surface

Common attack paths and issues tested

BOLA and tenant crossover

We test whether identifiers, nested objects, or route structure let one user access another tenant’s records or actions.

Privilege escalation through function exposure

Endpoints intended for internal operators or adjacent roles are tested for accidental exposure through weak policy enforcement.

Mass assignment and unsafe state mutation

We look for object properties and hidden parameters that let standard users alter ownership, pricing, roles, or approvals.

What clients receive

Endpoint-level findings tied to real exploit paths
Clear explanation of affected roles, resources, and trust boundaries
Practical fix direction for engineering teams and platform owners
Retesting after remediation for closure confidence

Engagement process

1Review auth model, roles, object ownership, and API consumers
2Map reachable endpoints and hidden behaviors
3Manually test exploit chains and business impact
4Report, walkthrough, and validate remediations

Related resources

Articles that help teams evaluate and prepare for this service

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API Security• 4 min read

Common API Attack Paths Security Teams Should Expect

The most damaging API issues are usually tied to authorization, object ownership, hidden functionality, and state transitions rather than exotic payloads.

api securityauthorizationbola

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Pentest Methodology• 4 min read

Pentest vs Vulnerability Scan: What Actually Changes

A scan finds known issues. A pentest validates exploitability, chains weaknesses together, and explains business impact in a way that supports decisions.

vulnerability scanpentestmanual testing

Read article

Frequently asked questions

Do you need a full OpenAPI spec to test effectively?

No. A spec helps, but we can work from traffic, documentation, application behavior, and route discovery where needed.

Can you test partner or internal APIs as well?

Yes. Those APIs often carry the highest trust assumptions and deserve direct review.

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