Security workers are individuals who are responsible for protecting people, property, and information. The two most common types of security workers are guards and rent-a-cops. Guards are employed by companies or organizations to protect their premises and personnel from theft, vandalism, and other criminal activities. Rent-a-cops are private security officers who are hired on a contractual basis to provide security services. Both guards and rent-a-cops are trained in the use of firearms and other security measures to ensure the safety of those they are protecting.