API Security Test Plan
A test-plan resource for SaaS, fintech, and backend teams validating authorization, tenancy, abuse resistance, and API reliability.
Endpoint-by-endpoint testing that misses object ownership flaws.
API abuse that increases cost, fraud exposure, or operational instability.
Async workflows and webhooks left outside the security model.
Built For
Backend teams preparing API security tests before release.
SaaS teams validating tenant isolation and role boundaries.
Fintech teams connecting API controls to fraud and compliance risk.
Use Cases
Plan tests for BOLA, IDOR, JWT/session, rate limits, webhooks, and async jobs.
Map endpoint behavior to business objects and ownership rules.
Create a shared API security backlog before assessment.
Related Content
Related Advisories
Frequently Asked Questions
What is the first API security priority?
Authorization. Every object, tenant, role, and action must be checked against business rules, not just route access.
Can this be used by developers?
Yes. It is designed to help backend teams prepare evidence and reduce avoidable findings before a formal test.
Need help validating this attack surface?
Talk with Eresus Security about scoped testing, threat modeling, and remediation priorities for this workflow.
Talk to Eresus