How to mitigate false positives in Falcon EDR during bulk software deployment?
I'm managing a large enterprise environment and we're experiencing a significant number of false positives when deploying software updates across multiple endpoints using Falcon EDR. The alerts are primarily triggered during: - Bulk software installations - Scheduled patch deployments - Automated software updates I've tried creating exclusion rules based on file paths and hashes, but the issue persists because file hashes change with each update. What's the most effective approach to reduce these false positives while maintaining security coverage? I'm looking for: 1. Best practices for exclusion rules 2. How to handle certificate-based exclusions 3. Recommendations for deployment workflows that minimize false positives
1 Answer
The most effective way is to define an exclusion rule based on the certificate thumbprint of the installer. This ensures that even if file hashes change, the certificate-based exclusion will continue to work. Here's what I recommend: 1. Extract the certificate thumbprint from your software vendor's installer 2. Create a certificate-based exclusion in Falcon 3. Combine this with path-based exclusions for temporary installation directories 4. Use deployment groups to test exclusions before rolling out enterprise-wide This approach has reduced our false positives by 85% while maintaining security coverage.
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