detecting-api-enumeration-attacks

Detect API enumeration attacks by running the included Splunk or Elastic SIEM queries against your access logs to identify sequential ID enumeration, UUID enumeration, and parameter tampering patterns. The prebuilt rules analyze authorization failures and abnormal API usage to prevent data exposure.

BOLA (Broken Object Level Authorization) is an API vulnerability where users access unauthorized data by enumerating object IDs. Detection identifies BOLA attempts by monitoring access patterns and authorization failures across API endpoints, flagging sequential or UUID enumeration and parameter tampering.

Yes, you can detect BOLA attacks without Splunk or Elastic SIEM by using the included Python-based detector script. The script requires the requests library and analyzes your API logs to identify enumeration patterns and authorization failures in real time.

The best way to monitor API authorization failures is applying configurable detection rules with severity scoring and time windows to your API gateway or back-end service logs. This approach catches abnormal API usage and prevents data exposure from enumeration attacks.

You need API gateway, SIEM, or back-end service logs to detect sequential ID enumeration. The detection agent analyzes these access logs to identify abnormal API usage patterns and applies guardrails to ensure accurate severity scoring.