Refers to protective services that a private security firm provides to people, agencies and companies that do not employ their own security personnel or that need extra protection, while refers to in-house protective services that a security staff provides for the entity that employs it.

Contract security; Proprietary security

Explanation:

Security officer or security guard is an individual employed for the protection of people, employing party, company or agencies; by the government or a private security firm.

They are responsible for protecting various assets such as people, property, money, equipment, etc from harmful or unsafe activities.

Contract security is the type of security provided by a private security firm for the protection of people or locations such as companies or agencies.

Proprietary security, also known as the in-house security, is the type of security that is employed for the protection of the employing company.

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