In response to a security incident involving unauthorized access to file servers, an enterprise wishes to enhance its security architecture to limit the risk of future breaches spreading from individual workstations to critical servers. Which of the following would be the most effective method to accomplish this?
Activate firewall software on all workstations within the network.
Remove all non-essential services running on the workstations.
Update the permissions for all files on the servers to limit workstation access.
Create subdivided areas within the network, each with controlled access to corporate servers.