// // API SECURITY TESTING SERVICES
API Security Testing Services
QACraft's API Security Testing Services identify vulnerabilities across REST, GraphQL, SOAP, and microservice APIs through expert API security assessments and manual validation. We test authentication, authorization, business logic, rate limiting, data exposure, and the OWASP API Security Top 10—with CVSS-scored findings, remediation guidance, and retesting to help secure your APIs before vulnerabilities become breaches.
API SECURITY INSIGHTS
Why API Security Testing Is Essential for Modern Applications
Modern applications rely on APIs to exchange data, power mobile experiences, integrate third-party services, and support microservice architectures. Because APIs expose business logic and sensitive data directly, they have become one of the most targeted attack surfaces for cybercriminals. A secure web interface alone cannot protect an application if its underlying APIs contain authorization flaws, insecure authentication, excessive data exposure, or business logic vulnerabilities. QACraft's API Security Testing Services evaluate REST, GraphQL, SOAP, and modern API architectures against the OWASP API Security Top 10. Our security specialists assess authentication, authorization, object-level access controls, rate limiting, input validation, business logic, and API configuration using a combination of automated security tools and expert manual testing. Every validated finding includes CVSS-based risk scoring, remediation recommendations, and retesting to ensure vulnerabilities are fully resolved. Unlike functional API testing, which verifies expected behavior, API security testing determines whether attackers can abuse endpoints to gain unauthorized access, manipulate business workflows, or expose sensitive information. The outcome is stronger API resilience, reduced security risk, and greater confidence in every API your business depends on.API SECURITY SERVICES
Comprehensive API Security Testing for Modern Applications
QACraft provides API Security Testing Services across REST, GraphQL, SOAP, gRPC, and microservice architectures. Our security specialists combine automated testing with expert manual validation to assess authentication, authorization, business logic, input validation, data exposure, and API configurations against the OWASP API Security Top 10—with actionable remediation guidance and retesting.
QACraft provides API Security Testing Services across REST, GraphQL, SOAP, gRPC, and microservice architectures. Our security specialists combine automated testing with expert manual validation to assess authentication, authorization, business logic, input validation, data exposure, and API configurations against the OWASP API Security Top 10—with actionable remediation guidance and retesting.
Validate API authentication, object-level authorization (BOLA), function-level authorization (BFLA), RBAC, and access controls to prevent unauthorized access.
Assess OAuth, JWT, API keys, session tokens, refresh tokens, MFA integrations, and credential handling to identify authentication weaknesses.
Test SQL, NoSQL, command, XML, and other injection risks across API parameters, headers, and request bodies using controlled security testing.
Evaluate rate limiting, brute-force protection, resource consumption, mass assignment, scraping resistance, and denial-of-service controls.
Secure modern API architectures by testing GraphQL introspection, batching abuse, SOAP/XML security, REST endpoints, and gRPC services.
Engagement Models Designed for Secure API Delivery
A focused API security assessment for a production release, major platform change, compliance requirement, or defined API scope—with validated findings and remediation guidance.
API security wired into your release cycle, testing each new or changed endpoint and tracking risk as your surface grows.
Extend your internal security team with experienced API security specialists supporting assessment, remediation, validation, and ongoing security initiatives.
API SECURITY TOOLCHAIN
Enterprise-Grade API Security Toolchain
QACraft combines industry-leading API security tools with expert manual testing to uncover vulnerabilities that automated scanners alone often miss. Our API Security Testing Services leverage specification-driven validation, security automation, and human-led business logic analysis to provide comprehensive coverage across REST, GraphQL, SOAP, and modern API architectures.
The industry's leading platform for manual API security testing, request manipulation, authentication analysis, and vulnerability validation.
Specification-driven API validation, automated security workflows, regression testing, and CI/CD integration for secure API delivery.
Open-source security testing for automated vulnerability discovery, baseline API scanning, and continuous security validation.
Property-based API security testing driven directly from OpenAPI specifications to uncover unexpected edge cases and security weaknesses.
API contract security, OpenAPI governance, compliance validation, and specification-based risk analysis across the API lifecycle.
GraphQL security assessment covering schema analysis, introspection, authorization testing, batching attacks, and query abuse detection.
Template-based security scanning to rapidly identify known API vulnerabilities, exposed services, and common security misconfigurations.
Security validation for JWTs, OAuth tokens, claims, signature verification, expiration handling, replay protection, and token manipulation testing.
BUSINESS IMPACT
Protect Your APIs Before Attackers Find the Weaknesses
QACraft delivers API Security Testing Services for organizations where APIs power critical business operations, customer experiences, and regulated data. From financial transactions to healthcare platforms and high-volume e-commerce ecosystems, we help businesses secure APIs against evolving cyber threats while supporting compliance and customer trust.
Identify vulnerabilities across public, partner, and internal APIs before they expose sensitive business functions or customer data.
Validate object-level and function-level authorization controls to prevent attackers from accessing records, transactions, or privileged operations.
A locked-down front-end can hide a wide-open API. Testing the endpoints directly finds what clicking through never will.
Each API style has its own risks; we test them all properly instead of forcing one checklist onto everything.
Evaluate rate limiting, automation resistance, abuse scenarios, and business logic weaknesses that enable fraud, scraping, and resource exhaustion.
Support OWASP API Security Top 10, PCI DSS, HIPAA, SOC 2, and ISO 27001 initiatives with validated findings, remediation guidance, and retesting.
ASSESSMENT METHODOLOGY
A Proven Methodology for API Security Assessment
Every API Security Testing engagement follows a structured methodology designed to identify, validate, and remediate vulnerabilities with minimal disruption. From API discovery and threat modeling to exploitation, reporting, and validation retesting, we provide clear evidence and actionable recommendations throughout the assessment.
API Discovery & Attack Surface Analysis
Identify REST, GraphQL, SOAP, gRPC, and undocumented endpoints by analyzing API specifications, gateways, authentication mechanisms, and exposed services to establish the complete attack surface.
→ API Inventory • Attack Surface MapOWASP API Top 10 Probing
Evaluate APIs against the OWASP API Security Top 10, validating authentication, authorization, business logic, rate limiting, input validation, data exposure, SSRF, and API-specific attack vectors.
→ OWASP API Risk AssessmentManual Exploitation & Risk Validation
For each candidate, we safely confirm real impact — proving a BOLA actually returns another user’s data, or that an endpoint accepts unlimited requests — so you get verified findings, not theory.
→ Validated Security FindingsReporting, Remediation & Verification
Deliver detailed technical reports with CVSS scoring, remediation guidance, proof-of-concept evidence, and perform validation retesting to confirm vulnerabilities have been resolved.
→ Final Security Report • Retest ValidationSample API Security Assessment Report
Review a sample assessment showing API discovery, validated OWASP API Security Top 10 findings, CVSS-based risk prioritization, proof-of-concept evidence, and remediation recommendations. The illustration demonstrates the reporting format and level of technical detail clients receive.
MODERN API CHALLENGES
Modern APIs Demand More Than Automated Security Scans
Modern applications increasingly depend on APIs to connect web and mobile experiences, microservices, cloud platforms, and third-party integrations. This makes APIs a critical part of the application's attack surface—and a single weakness can expose sensitive data or allow unauthorized actions. API Security Testing goes beyond checking whether an endpoint works. It evaluates whether an API can be abused through broken authentication, authorization flaws, excessive data exposure, injection, business logic weaknesses, and improper security controls. QACraft combines automated security testing with expert manual validation to identify vulnerabilities that scanners alone may miss. The result is a stronger API security posture, clearer risk visibility, and actionable remediation guidance that helps organizations secure APIs before vulnerabilities become costly security incidents.INDUSTRIES WE PROTECT
API Security Testing for High-Risk Industries
QACraft delivers API Security Testing Services for organizations where APIs power critical business operations, customer experiences, and regulated data. From financial transactions to healthcare platforms and high-volume e-commerce ecosystems, we help businesses secure APIs against evolving cyber threats while supporting compliance and customer trust.
why us
Why Choose QACraft for API Security Testing
Teams choose QACraft when they want API security tested on its own terms — every style, every OWASP API risk, with authorization depth — not a generic web scan pointed at an endpoint.
Every endpoint tested against all ten API risk categories — structured, repeatable coverage, not ad-hoc poking.
We test object- and function-level authorization (BOLA/BFLA) by hand — the logic flaws scanners cannot reason about.
Each API style tested on its own terms, with style-specific risks covered — not a REST checklist forced onto everything.
Testing driven from your OpenAPI/GraphQL schema, so no endpoint — even deprecated ones — is missed.
Findings scored, CWE-mapped and placed in the OWASP API Top 10, with a retest after you remediate.
We also cover functional API testing and API automation — correctness, CI and security under one team.
straight answers
Frequently Asked Questions
What is API security testing?
API security testing assesses your APIs — REST, GraphQL and SOAP — for vulnerabilities that let an attacker abuse them: broken authorization, weak authentication, excessive data exposure, missing rate limits, and injection. Because most modern apps put their real logic and data behind APIs, the API is now the primary attack surface — and it needs a security lens of its own, not just functional checks.
How is this different from functional API testing and API automation?
They answer different questions about the same APIs. Functional API testing asks 'does it return the right response?' (correctness). API automation asks 'does it still work on every build?' (CI/regression). API security testing asks 'can it be abused?' — can someone read another user's data, bypass auth, or hammer it without limit. Same endpoints, a security lens. Most teams need all three.
What is the OWASP API Security Top 10, and do you cover it?
Yes — it's the backbone of our testing. The OWASP API Top 10 is the standard list of the most critical API risks: Broken Object Level Authorization (BOLA), Broken Authentication, Broken Object Property Level Authorization (excessive data exposure), Unrestricted Resource Consumption (rate limiting), Broken Function Level Authorization, SSRF, security misconfiguration and more. We test every endpoint against all of them.
Do you test GraphQL and SOAP, or only REST?
All three. REST is the most common, but GraphQL has its own risks — introspection exposure, query depth and batching abuse, field-level authorization — and SOAP services carry XML-specific issues like XXE. We tailor the test to the API style rather than forcing a REST-only checklist onto everything.
What is BOLA, and why does it matter so much?
BOLA — Broken Object Level Authorization — is the #1 risk on the OWASP API Top 10. It happens when an API returns an object (an order, a record, a profile) without checking that the caller is actually allowed to see that object — so changing an id in the URL exposes someone else's data. It's common, easy to miss in functional testing, and a frequent cause of real-world breaches, which is why we test it on every object endpoint.
How are findings reported, and does this support compliance?
Every finding is CVSS-scored, CWE-mapped and placed in the OWASP API Top 10, with the exact request, evidence and a developer-ready fix — then retested after remediation. The testing also supports the API-security evidence expected by SOC 2, ISO 27001, PCI-DSS and similar frameworks.
Ready to secure your API surface?
Build your plan in 60 seconds — or bring your API spec to a 30-minute call and leave with a scoped API security plan and a single number.