Making sure your door access control system is secure: Top 5 things to check

This advisory explains how to harden physical access control systems against RFID card cloning by using custom, unique encryption keys, disabling legacy card technologies to prevent technology downgrade attacks, requiring installers to implement cloning-resistant configurations, choosing protected authentication data formats, and ensuring front-end readers match the security of backend systems. Properly configured, PACS can be highly resistant to covert cloning and significantly improve building security.