Secure Your Security
Expert security testing for REST, GraphQL, SOAP, and gRPC APIs. We uncover authentication flaws, broken access controls, injection vulnerabilities, and business logic issues that could expose your data and services.
API Security Testing?
API Security Testing evaluates the security of your application programming interfaces — the backbone of modern software architectures. APIs are increasingly targeted by attackers because they provide direct access to sensitive data and business logic, often with less protection than traditional web applications.
Our testing covers authentication, authorization, input validation, rate limiting, data exposure, and business logic vulnerabilities across REST, GraphQL, SOAP, gRPC, and WebSocket APIs. We follow the OWASP API Security Top 10 to ensure comprehensive coverage of the most critical API threats.
Our Process
A structured, comprehensive approach tailored to your specific needs and requirements.
API Discovery & Mapping
Endpoint Enumeration
Discovering all API endpoints including undocumented, deprecated, and shadow APIs through traffic analysis and documentation review.
Schema Analysis
Reviewing OpenAPI/Swagger specs, GraphQL schemas, and WSDL documents to understand data models and operations.
Authentication Flow Mapping
Analyzing API key, OAuth 2.0, JWT, and custom authentication mechanisms for design weaknesses.
Authentication & Authorization Testing
Token Security
Testing JWT implementation, token expiration, refresh mechanisms, and cryptographic strength of API authentication tokens.
Access Control Testing
Verifying BOLA/IDOR protections, role-based access controls, and horizontal/vertical privilege escalation across all endpoints.
Rate Limiting & Abuse
Testing rate limiting, throttling, and resource consumption controls to prevent API abuse and denial of service.
Business Logic & Data Validation
Input Validation
Testing for SQL injection, NoSQL injection, command injection, and parameter manipulation across all API inputs.
Business Logic Flaws
Identifying workflow bypasses, race conditions, mass assignment, and application-specific logic vulnerabilities.
Data Exposure Analysis
Evaluating API responses for excessive data exposure, sensitive information leakage, and improper error handling.
Reporting & Remediation
API Security Report
Comprehensive findings mapped to OWASP API Top 10 with proof-of-concept requests and response evidence.
Developer Guidance
Framework-specific remediation guidance with secure API design patterns and implementation examples.
Retesting & Validation
Verification of fixes with updated security assessment and ongoing API security recommendations.
Why Choose 8kSec?
API-First Expertise
Specialists in modern API architectures including microservices, serverless, event-driven, and API gateway patterns.
GraphQL Deep Dives
Advanced GraphQL testing including introspection abuse, nested query attacks, batching exploits, and field-level authorization.
OWASP API Top 10 Aligned
Testing methodology aligned with the latest OWASP API Security Top 10, covering all critical API threat categories.
Postman & Swagger Integration
We work with your existing API documentation, Postman collections, and OpenAPI specs for efficient and thorough testing.
CI/CD Pipeline Ready
Findings can be integrated into your development workflow with machine-readable formats for automated tracking.
Microservices Coverage
Experience testing complex microservice architectures, service mesh security, and inter-service communication.
How Much Does API Security Testing Cost?
Pricing depends on the number of endpoints, authentication complexity, and testing depth required.
Get a Tailored QuoteNumber of Endpoints
Total API endpoints, methods, and parameter combinations to test
Authentication Complexity
OAuth flows, JWT implementations, API keys, and multi-tenant isolation
API Protocol
REST, GraphQL, SOAP, gRPC, or WebSocket — each requires specialized testing approaches
Business Logic Depth
Complexity of workflows, state management, and application-specific logic to test
Frequently Asked Questions
Secure Your APIs Today
APIs are the backbone of your digital business. Ensure they're protected against the latest attack techniques with our expert security assessments.