● Install physical controls to prevent unauthorized personnel from accessing your industrial control and security systems, components, peripherals, and networks. Place all controllers in a locked cabinet and do not put them in "program" mode. Scan and isolate all mobile data exchange methods for networks, such as CDs, USB drives, etc., before using them in terminals or nodes connected to these networks. Never allow laptops that have previously been connected to the network to connect securely or control network connections to networks without appropriate sanitation facilities. Minimize the network exposure of all control system devices and systems, and verify that they are never accessible from the internet. When remote access is required, please use secure methods such as virtual private networks. Realizing that VPN may have vulnerabilities, it should be updated to the current version that is highly available. In addition, it is important to recognize that the security of VPN depends on the connected device. Schneider Electric continues to recommend that customers always follow the instructions in the user manual provided in the "Safety Precautions" section, which includes the following: Ensure that the network security features in the Triconex solution are always enabled. Always deploy security systems on isolated networks. Ensure the security of all trstation engineering workstations and do not connect to any other network that is more secure than a secure one. ● Configure the operator station to display alarms whenever the Tricon key switch is in "program" mode.