Secure Your REST and GraphQL APIs
Comprehensive API security assessments including OWASP API Security Top 10 testing, authentication, authorization, and injection vulnerability analysis.
API penetration testing is a comprehensive security assessment of your application programming interfaces, including REST APIs, GraphQL APIs, SOAP services, and custom API implementations. We simulate real-world attacks against your APIs to identify authentication weaknesses, authorization bypass vulnerabilities, injection flaws, excessive data exposure, rate limiting issues, and other security gaps. API testing is critical because modern applications rely heavily on APIs for internal communication, third-party integrations, and mobile app functionality, making API security essential to overall application security.
Modern applications are built on APIs. Mobile apps, third-party integrations, and microservices all depend on APIs. As API usage grows, so does the attack surface for compromising applications.
APIs often expose more data than web interfaces due to insufficient filtering or overly permissive responses. Testing reveals where sensitive data is accessible through API endpoints.
Many APIs have inadequate authentication mechanisms or authorization checks that allow attackers to access resources belonging to other users or escalate their privileges.
APIs implement complex business logic that may contain flaws enabling unauthorized transactions, data manipulation, or privilege escalation not possible through the web interface.
RESTful API security including HTTP method vulnerabilities, endpoint enumeration, and resource-based access control flaws.
GraphQL-specific vulnerabilities including introspection queries, excessive data exposure, injection attacks, and query complexity exploitation.
Comprehensive testing for broken object level authorization, broken authentication, excessive data exposure, lack of resources and rate limiting, and broken function level authorization.
API authentication mechanisms (OAuth 2.0, JWT, API keys), token validation, session management, and access control enforcement.
SQL injection, NoSQL injection, command injection, and other injection vulnerabilities through API parameters and request bodies.
Testing for adequate rate limiting, resource quotas, request size limits, and protection against brute force and denial-of-service attacks.
We discover and document all API endpoints, parameters, request/response structures, authentication mechanisms, and available functionality through API documentation, inspection, and active testing.
We test authentication implementation, attempt token manipulation, test authorization controls, check for privilege escalation paths, and validate proper access control enforcement.
We test for SQL injection, NoSQL injection, command injection, path traversal, and other injection vulnerabilities through various API parameters and payloads.
We attempt to access resources belonging to other users, extract excessive data through API responses, manipulate business logic, and exploit API-specific vulnerabilities.
We provide detailed findings with proof-of-concept demonstrations, prioritized recommendations, remediation guidance, and architectural improvements for API security.
$500
Automated API security assessment with AI-powered vulnerability scanning. Ideal for single API endpoint analysis and initial vulnerability discovery.
Request Assessment$2,000+
Comprehensive manual penetration testing by certified professionals. Covers REST, GraphQL, OWASP API Top 10, authentication, authorization, and business logic vulnerabilities.
Schedule TestingPayment Card Industry Data Security Standard compliance testing for APIs handling cardholder data and payment information.
Healthcare Industry compliance testing for APIs protecting patient health information and medical records.
Service Organization Control compliance validation for API security, availability, and confidentiality controls.
International information security management standard compliance for API infrastructure and security controls.
National Institute of Standards and Technology framework alignment for API security maturity assessment.
Cybersecurity Maturity Model Certification compliance for defense contractors using APIs for defense-related work.
We provide comprehensive penetration testing for REST APIs, GraphQL APIs, SOAP web services, gRPC services, and custom API implementations. Our testing methodology applies to any API architecture.
The OWASP API Security Top 10 lists the most critical API vulnerabilities including broken object level authorization, broken authentication, excessive data exposure, lack of resources and rate limiting, broken function level authorization, mass assignment, and other API-specific security risks.
We work with your team to test against staging or sandbox environments. Our testing focuses on identifying vulnerabilities through request analysis and manipulation rather than denial-of-service attacks that would disrupt service.
Common API vulnerabilities include broken authentication, inadequate authorization checks, excessive data exposure through error messages, lack of rate limiting, insecure direct object references, injection flaws, and insufficient input validation.
Yes, API penetration testing supports compliance with PCI DSS, HIPAA, SOC 2 Type II, ISO 27001, NIST Cybersecurity Framework, and CMMC 2.0 requirements by validating secure API design and implementation.
Comprehensive web application security assessments including frontend and backend vulnerabilities.
Learn MoreExternal-facing infrastructure and API assessment from an attacker's perspective.
Learn MoreNetwork security assessments including infrastructure testing that APIs depend on.
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