API Security

API Security Testing

Adversarial testing for REST, GraphQL, and service-to-service trust boundaries

We build a threat model around data ownership and tenant boundaries, then validate whether API design and implementation enforce them under abuse conditions.

Engagement Duration

4-8 business days

Primary Outcome

A validated endpoint risk map showing exploitable paths, affected objects, and concrete API-level remediation priorities.

How This Engagement Works

Methodology + Threat Model

Human-led

We define scope, trust boundaries, and likely attacker goals for your exact environment.

AI Lead Generation

AI-assisted

Automation surfaces anomalous behavior, edge cases, and high-value paths worth manual attention.

Exploit Validation

Human-led

Every reported finding is manually reproduced and impact-tested before inclusion.

Remediation + Retest

Collaborative

We deliver developer-ready fixes and perform a free retest after your patch window.

Where AI Usually Finds Interesting Leads

01

Object-level access gaps hidden behind otherwise valid token scopes

02

Schema/query combinations that expose fields outside intended audience

03

Rate-limit bypass patterns through endpoint sequencing and batching

04

Error-message leakage that accelerates endpoint and object enumeration

Authorization Reality Check

We test whether object ownership and role boundaries hold up under manipulation, not just happy-path access control tests.

BOLA and function-level authorization abuse scenarios

Cross-tenant data access and boundary erosion checks

Token scope enforcement under replay and mutation

Ownership validation gaps in nested object relationships

Abuse Path and Data Exposure Testing

AI helps flag suspicious endpoint patterns, then we manually validate exploitability and real impact on confidentiality and integrity.

Mass assignment and structural parameter tampering

Rate-limit resistance under distributed request patterns

Verbose response leakage and metadata overexposure

GraphQL introspection, depth, and resolver abuse testing

Coverage Areas

Area 01

REST contracts

Area 02

GraphQL schema and resolvers

Area 03

Authentication and authorization

Area 04

Request abuse controls

Area 05

Input and schema validation

Area 06

Data minimization

Area 07

Token lifecycle and revocation

Area 08

Error/metadata handling

Reporting and Retest

Endpoint Risk Matrix

Severity and exploitability scored per endpoint, operation, and data object.

Validated Abuse Cases

Reproducible proof for authorization and data exposure failures.

Implementation Fix Guidance

Concrete recommendations for middleware, schema, and handler-level hardening.

Free Retest Validation

Post-fix verification to confirm API vulnerabilities are fully resolved.