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 (Akamai, 2024)

Top 10

OWASP API Security covers threats scanners miss

1 endpoint

A single broken API can expose your entire database

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 (Excel)
  • 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. Whether your API serves a mobile app, SPA, microservices architecture, or third-party integrations, our methodology covers all attack surfaces.

Black Box simulates a real attacker with no prior knowledge. Grey Box provides partial access (API docs, auth credentials). White Box includes full source code access for the deepest analysis.

Typically 5–10 business days depending on the number of endpoints, complexity of auth mechanisms, and engagement type. We provide a precise timeline after the scoping call.

We use non-destructive testing techniques. For production environments, we coordinate maintenance windows and use rate-limited testing. We can also test staging environments.

Our methodology is built on OWASP API Security Top 10 (2023), PTES (Penetration Testing Execution Standard), and NIST SP 800-115. All findings are scored using CVSS 3.1.

Yes. Every finding includes code-level remediation recommendations, not just vulnerability descriptions. We also offer a post-report debrief call with your engineering team.

Yes. One free re-test for critical and high severity findings is included in every engagement. This verifies that your fixes are effective.

Ready to secure your systems?

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