API SECURITY

API Penetration Testing

APIs are the backbone of modern applications — and the #1 attack surface exploited by adversaries. We deliver deep, manual and automated testing of REST, GraphQL, gRPC, and SOAP APIs.

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Why This Matters

83%

of web traffic is API traffic across modern applications

Top 10

OWASP API Security covers threats automated scanners miss

1 endpoint

A single broken API endpoint can expose your entire customer database

Service Overview

Our API Penetration Testing service systematically uncovers Broken Object Level Authorization (BOLA/IDOR), broken authentication, mass assignment, injection vulnerabilities, and business logic flaws across your API endpoints.

Assessment Scope

REST, GraphQL, gRPC & SOAP Endpoints
Authentication & Authorization Flows
Rate Limiting & Anti-Automation
Data Serialization & Input Validation

Our Methodology

A structured, repeatable approach that delivers consistent results

1

Recon & Scope

Surface mapping and endpoint inventory

Swagger/OpenAPIJS AnalysisBurp CrawlAuth Scheme IDData Flow Mapping
2

Auth & Authorization

Access control testing

JWT ConfusionBOLA/IDORBFLAOAuth 2.0 LeakagePKCE Bypass
3

Injection & Logic

Exploitation testing

SQLi/NoSQLiCommand InjectionGraphQL AbuseMass AssignmentWorkflow Bypass
4

Rate Limiting & Abuse

Resilience testing

Auth Rate LimitsGraphQL ExhaustionAccount EnumerationTiming Attacks
5

Reporting

Comprehensive deliverables

Executive SummaryCVSS 3.1 ScoringPoC StepsCode-Level FixesRe-test

Standards & Frameworks

OWASP API Top 10 (2023)PTESNIST SP 800-115

Deliverables

  • Executive Report (board-ready)
  • Full Technical Report (CVSS 3.1)
  • Remediation Tracker
  • Developer Fix Guide
  • Free Re-test for Critical/High

Timeline

5–10 business days

From scoping call to final report

Engagement Types

Frequently Asked Questions

We test REST, GraphQL, gRPC, and SOAP APIs across cloud, microservices, and mobile backend environments.

We employ safe, non-destructive methodologies and coordinate testing windows for live endpoints.

Yes, a free re-test is included for all critical and high-severity findings.

Ready to secure your systems?

Get a comprehensive assessment scope details from our cybersecurity team.

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