APIs are now critical business infrastructure, which also makes them a prime target for abuse. Security must be designed into integration workflows from the start.

Use least-privilege scopes for every integration and rotate credentials on a fixed schedule. Never let long-lived secrets spread across environments.

Validate payloads and signatures at boundaries. Input validation and schema enforcement prevent malformed or malicious data from propagating.

Maintain audit trails for authentication events, permission changes, and sensitive requests. Strong observability makes incident response faster and less disruptive.