Which of the following is NOT a security officer's duty?

A security officer's primary responsibilities typically involve maintaining safety and security on the premises they are assigned to. This includes monitoring for unusual activity, which helps identify potential threats or breaches of security. Performing routine inspections is also part of a security officer's duties, as regular checks ensure that security protocols are followed and any vulnerabilities are addressed promptly. Enforcing company policies is essential because security officers help maintain order and ensure compliance with the rules set by the organization.

In contrast, investigating theft as a private investigator is not a duty of a security officer. Security officers focus on preventing incidents and maintaining safety rather than conducting investigations as a private party, which would typically require different qualifications and a different legal framework. Their role is to respond to incidents, report them, and sometimes cooperate with law enforcement, but they are not authorized to conduct private investigations.