To learn more about security companies, this list of the 15 largest private security companies in the world (2023) from Yahoo! Entertainment is a great place to start.
The article briefly describes each company, including their focus areas, services offered, and notable clients. Some of the companies on the list include G4S, Securitas AB, and Allied Universal. It also mentions recent mergers and acquisitions in the private security industry, such as Allied Universal’s acquisition of G4S in 2021. The companies on the list are responsible for providing security services to a wide range of industries, including government, finance, and healthcare.