API object authorization concept with user, object ID, and lock

API BOLA Explained with Realistic Examples

BOLA happens when an API exposes object identifiers but fails to verify whether the caller is allowed to access the object.

July 8, 2026 · 7 min · KevinSec
API authentication flow with client token and backend verification

API Broken Authentication: Common Testing Patterns

API broken authentication appears when an API cannot reliably prove who the caller is or cannot safely manage credentials, tokens, and sessions.

July 8, 2026 · 7 min · KevinSec