Jacob, a network defender in an organization, was instructed to improve the physical security measures...

Deterrent controls are a type of physical security controls that use warning messages and signs to notify legal consequences and discourage hackers from making intrusion attempts. Deterrent controls aim to reduce the likelihood of an attack by creating a perception of risk or fear in the potential attackers.Deterrent controls can include fences, locks, alarms, cameras, guards, or security policies12.References:Network Defense Essentials - EC-Council Learning,Understanding the Various Types of Physical Security Controls