Which type of security service focuses on investigations?

Private investigators primarily focus on conducting investigations, which distinguish them from other types of security services. Their role involves gathering information, conducting surveillance, and often working on specific cases such as fraud, missing persons, or background checks. Unlike private security guards, who typically provide a visible presence and deter crime, or security alarm technicians, who install and maintain alarm systems, private investigators delve deeper into collecting evidence and performing analytical tasks associated with investigations. Their training often encompasses legal boundaries regarding surveillance and information gathering, making them specialists in this field.