performing-api-security-testing-with-postman

# Performing API Security Testing with Postman ## When to Use - Building repeatable API security test suites for OWASP API Security Top 10 coverage - Creating automated security regression tests that run in CI/CD pipelines via Newman - Testing API authentication and authorization across multiple user roles systematically - Integrating Postman with OWASP ZAP proxy for combined manual and automated security testing - Establishing a baseline security test collection for new API endpoints before deployment **Do not use** against production APIs without authorization. Postman security testing involves sending potentially malicious payloads. ## Prerequisites - Postman Desktop or web application with an active workspace - Target API with OpenAPI/Swagger specification for collection import - Test accounts for at least three roles: unauthenticated, regular user, admin - Newman CLI installed for CI/CD integration: `npm install -g newman` - OWASP ZAP configured as local proxy (localhost:8080) for Postman proxy integration - API environment variables for base URL, tokens, and test data ## Workflow ### Step 1: Environment and Collection Setup Create Postman environments for multi-role testing: ```json // Environment: API Security Test - Regular User { "values": [ {"key": "base_url", "value": "https://target-api.example.com/api/v1"}, {"key": "auth_token", "value": ""}, {"key": "user_email", "value": "regular@test.com"}, {"key": "user_password", ...