BETA Shoulder is in beta — Findings may sometimes be wrong. Your feedback shapes what we fix next. Share feedback
#9 A09:2025

Security Logging and Alerting Failures

This category helps detect, escalate, and respond to active breaches. Without logging and alerting, breaches cannot be detected in time to respond.

Overview

Renamed from 'Security Logging and Monitoring Failures' to emphasize actionable alerts over mere monitoring. This category is challenging to test for and isn't well represented in CVE/CVSS data.

How Attackers Exploit This

Understanding attack patterns helps you build better defenses. These are the techniques security teams watch for.

Undetected breach

Without proper logging and alerting, attackers can operate undetected for extended periods, exfiltrating data gradually.

Detection signal: This is the problem - without alerting, there IS no indicator until it's too late

Log tampering

Attackers with access modify or delete logs to cover their tracks.

Detection signal: Gaps in log sequences, modified timestamps, missing entries

Alert fatigue exploitation

Attackers generate noise to cause alert fatigue, then conduct real attacks during the confusion.

Detection signal: Spike in low-severity alerts followed by suspicious activity

How to Prevent

  • Log all login, access control, and server-side input validation failures
  • Ensure logs are in a format easily consumed by log management solutions
  • Ensure log data is encoded correctly to prevent injection attacks
  • Ensure high-value transactions have an audit trail with integrity controls
  • Establish effective alerting with actionable thresholds
  • Establish an incident response and recovery plan
  • Use SIEM or centralized logging with real-time alerting

CWEs with Shoulder Detection (3)

These CWEs have Shoulder detection rules. Click to see specific vulnerabilities and fixes.

Other Mapped CWEs (2)

These CWEs are mapped to this category. Use MITRE references for guidance.