How to Investigate a Suspicious Increase in Failed API Authentication

Authentication failures may indicate expired credentials, a deployment error, abuse, or an attempted credential attack.

Checks to make

Group failures by key or identity, source, endpoint, and time; compare with credential rotations and deployment records; and look for successful use after the failures. Preserve logs and rotate or restrict credentials if the pattern is unexplained.

When to get help

Security operations can correlate API authentication and change events. Informatix Systems can assess the symptoms, evidence, and next steps. Contact Informatix Systems to discuss this issue.