TLDR InfoSec · STRATEGIES & TACTICS

RISK-BASED ALERTING IN MICROSOFT SENTINEL

isaacdunham.github.io8 min read

Summary from the TLDR InfoSec newsletter

Risk-Based Alerting (RBA) allows analysts to combine multiple lower-fidelity alerts into a single higher-confidence incident by assigning risk scores to alerts that do not individually generate incidents. An incident is only created once a cumulative risk threshold is met. When assigning scores, teams should weigh potential impact, the criticality of the asset or user involved, and the confidence that the behavior reflects real malicious activity. This approach can reduce alert fatigue and improve triage efficiency.