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Application & OT Security · Foundational

Security Logging and Monitoring Failures

OWASP Top 10 category for insufficient logging, detection, alerting and response that allows breaches to go unnoticed.

Definition

Examples include not logging failed logins or access control failures, logs stored only locally, no alerting thresholds, and logs vulnerable to injection. Renamed Security Logging and Alerting Failures in 2025. Mitigations include logging security events with context, centralized tamper-resistant storage, alerting and an incident response plan.

Example

Thousands of failed logins from one IP generate no alert for weeks.

Exam tip

This category is rarely found by testing alone; it is about detection and response capability (A09).

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