Which one of the following statements is true regarding a security guard's use of the internet while at work?

A security guard's use of the internet while on duty is primarily dictated by the company policies that govern their conduct. When the correct choice states that a security guard may use the internet only when authorized by company policy, it underscores the importance of adhering to established guidelines set by the employer.

These policies are in place to ensure that the primary responsibilities of the guard—maintaining security and vigilance—are not compromised by personal activities online. It also serves to protect the organization's data integrity and privacy, as unrestricted internet access can lead to potential breaches or distractions. By emphasizing authorization, this statement reflects a structure that prioritizes security protocol and workplace professionalism, which is essential in a role that requires a high level of trust and accountability.

In contrast, the other options suggest scenarios that could lead to misuse or distraction, as they do not align with the strict adherence to company policy that is paramount in security roles.