LOG-06Moderate

How to Fix: Sign-In Log Anomaly Baseline

Step-by-step guide to implement sign-in log anomaly baseline in your Microsoft 365 environment.

15-20 minutes

Estimated Time

4

Steps

medium

Severity

Enhanced Security

Baseline Level

Why This Matters

Without a baseline of normal activity, you cannot detect anomalous behavior. Establishing what "normal" looks like enables detection of unauthorized role assignments, policy changes, and consent grants.

Prerequisites

  • 1Global Administrator or appropriate admin role in Microsoft Entra ID
  • 2Access to Microsoft Entra admin center (entra.microsoft.com)

Expected Configuration

  • Baseline of normal privileged operations is established
  • Unusual spikes in role changes or CA modifications are detected
  • SIEM integration provides continuous anomaly monitoring

Remediation Steps

1

Review Current Configuration

Assess your current configuration in Microsoft Entra admin center.

  • Navigate to the relevant section in Entra admin center
  • Document current settings
  • Compare against expected state
2

Plan Implementation

Determine the changes needed to meet the expected configuration.

  • Review expected configuration requirements
  • Identify affected users or resources
  • Plan rollout strategy
3

Implement Changes

Apply the necessary configuration changes.

  • Make required configuration updates
  • Apply to appropriate scope
  • Document changes made
4

Validate and Monitor

Verify the changes are working as expected.

  • Run TrueConfig scan to verify compliance
  • Test affected functionality
  • Set up ongoing monitoring

Related Resources

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