Overview of API Attack Techniques in 2026

Hive Security has published a guide covering current techniques for exploiting modern APIs: 🔘 JWT attacks: alg: none, RS256 → HS256 confusion, brute-forcing weak secrets, jku/kid injections 🔘 OAuth abuse: authorization code theft via redirect_uri, CSRF on callback, token leakage via Referer, scope escalation 🔘 GraphQL exploitation: introspection in production, rate limit bypass via batching and aliases, DoS through nested queries, IDOR 🔘 REST pentesting basics: BOLA, mass assignment, missing rate limiting 🔘 attack detection from a Blue Team perspective

📎 Article: https://hivesecurity.gitlab.io/blog/api-security-jwt-oauth-graphql-attacks/