Application allowlisting (whitelisting) prevents unauthorized programs from running by permitting only approved applications, scripts, and installers; to deploy it effectively, inventory your software, start policies in audit mode to collect and tune rules, pilot on a small group, then enforce gradually using publisher- or signature-based rules rather than brittle file-hash rules. Integrate allowlisting into change management (approve and sign new apps), provide a documented emergency exception process, forward allowlist events to your SIEM/EDR for monitoring and alerts, and regularly review/retire rules to avoid business disruption while maintaining strong protection against malware and unauthorized tools.
PDF Download: Implement Application Allowlisting
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