DLP-02Moderate
How to Fix: Block Bulk Data Exfiltration
Step-by-step guide to implement block bulk data exfiltration in your Microsoft 365 environment.
30-60 minutes
Estimated Time
4
Steps
critical
Severity
Maximum Security
Baseline Level
Why This Matters
Insider threats and ransomware attackers exfiltrate data before deploying payloads. Detecting and blocking bulk data movement stops data theft in progress and provides early warning of compromise.
Prerequisites
- 1Global Administrator or appropriate admin role in Microsoft Entra ID
- 2Access to Microsoft Entra admin center (entra.microsoft.com)
- 3Appropriate Microsoft 365 license
Expected Configuration
- DLP policies prevent bulk downloads of sensitive data
- Alerts trigger on exfiltration patterns (>1000 files or >1GB in <1 hour)
- Automated blocking of suspicious bulk operations
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
Automate Your Security Configuration
TrueConfig continuously monitors your Microsoft 365 environment and can automatically fix configuration drift. Start your free trial today.
Start Free Trial