How Missing Logs Impact Cloud Security

This report details a September 2024 Microsoft monitoring-agent bug that produced incomplete logs across services (Microsoft Entra, Azure Monitor, Sentinel, Logic Apps, Healthcare APIs, and others), emphasizes that no breach was reported but missing logs can hinder detection of threats (BEC, MFA fatigue, brute-force, persistence), and recommends verifying impact via Microsoft 365 Message Center/Azure Service Health, reviewing log ingestion in your SIEM or data lake, and considering long-term cloud security data lake solutions.