api-security

name	api-security
description	API security testing - GraphQL, REST API, WebSocket, and Web-LLM attack techniques.

API Security

Test API endpoints for security vulnerabilities across REST, GraphQL, WebSocket, and LLM-integrated APIs.

Techniques

Type	Key Vectors
GraphQL	Introspection, batching attacks, nested query DoS, field suggestion
REST API	BOLA/IDOR, mass assignment, rate limiting, auth bypass, versioning
WebSocket	Cross-site hijacking, message manipulation, auth flaws
Web-LLM	Prompt injection via API, excessive agency, data exfiltration

Workflow

1. Discover API endpoints and documentation (Swagger, GraphQL schema)
2. Map authentication and authorization mechanisms
3. Test per API type using appropriate techniques
4. Validate data exposure and access control flaws
5. Capture evidence with HTTP request/response logs

Reference

• reference/graphql*.md - GraphQL attack techniques and labs
• reference/scenarios/rest/*.md - REST API security testing (BOLA/BOPLA, mass assignment, SSPP, content-type confusion)
• reference/websockets*.md - WebSocket vulnerability testing
• reference/web-llm*.md - Web-LLM attack techniques and labs