A manufacturing company utilizes an integrated system to monitor and control their factory operations. Recently, they have been concerned about potential cybersecurity threats that could disrupt production. As part of enhancing their network security, which of the following actions would be MOST effective in protecting their operational systems?
Implement network segmentation to isolate the critical industrial systems from the corporate IT network.
Change default passwords on all network connected devices within the factory.
Secure wireless signals by switching to WEP security protocol for all connections.
Regularly update all computer and network devices with the latest software patches.