SIEM Rules Best Practices

Effective SIEM rules are the backbone of security monitoring.

Rule Design Principles

1. Be Specific: Avoid overly broad rules that generate false positives
2. Context Matters: Include relevant metadata and context
3. Tune Regularly: Review and adjust rules based on feedback

Common Detection Patterns

Failed Login Attempts

event_type: authentication_failed
threshold: 5 attempts within 5 minutes
action: alert

Privilege Escalation

event_type: user_privilege_changed
from: user
to: admin
action: alert

Testing Your Rules

Always test rules in a staging environment before production deployment.