Which of the following is NOT a type of physical security control?

The correct answer highlights the distinction between physical security controls and those that pertain specifically to cybersecurity. Physical security controls are tangible measures used to protect personnel, property, and information from physical actions and events that could cause damage or loss.

Access controls, surveillance systems, and barriers are all fundamental components of physical security. Access controls regulate who can enter specific physical locations, ensuring that only authorized personnel have entry. Surveillance systems, such as cameras or monitoring equipment, help observe activities within and around a facility to deter unauthorized actions. Barriers, such as fences and gates, physically prevent unauthorized access to sensitive areas.

On the other hand, cybersecurity protocols focus on protecting systems and networks from digital attacks, unauthorized access, data breaches, and other virtual threats. This area deals with information security rather than the physical measures that protect actual facilities or assets. Therefore, cybersecurity protocols do not fit within the category of physical security controls, making it the correct choice for the question.