According to the CrowdStrike Falcon® Data Replicator (FDR) Add-on for Splunk Guide, the allowlist feature allows you to exclude files or directories from being scanned or blocked by CrowdStrike’s machine learning engine or indicators of attack (IOAs)2. This can reduce false positives and improve performance2. When you allowlist a hash, you are allowing that file to execute on any host that belongs to your organization’s CID (customer ID)2. The option to indicate that a hash is allowlisted is "Allow"2.