In 2020, Asia overtook Europe and North America to become the largest market for security services worldwide, valued at ** billion U.S. dollars. Europe was the second largest security services market, valued at ** billion U.S. dollars. Security services The security services market can be broadly divided into three main segments: security systems (for example for home or commercial real estate), private security guards and security consulting services. There is much cross over between these segments, for example with security guards being part of an overall security system, which in turn was created through security consulting services. IT security is also sometimes included as part of the security services industry but not always. Taken alone, IT security has a similar total market value to the entire traditional security services industry. Global leaders The global security services market is very concentrated, with there being four main multinational providers. Securitas and G4S are the largest of these four; both companies reporting revenue streams of approximately ** billion U.S. dollars in 2020. Allied Universal is another main global company for security service. There are other large security companies but they do not operate in multiple regions. For example, ADT are also a multi-billion dollar security provider but their services are limited to the North American market.

A 2023 survey of working adults and IT security professionals worldwide found that organizations in business services, consulting, and telecommunications industries showed the highest failure rate for phishing attack simulations, 12 percent. Mining and real estate companies followed, with an 11 percent failure rate. Additionally, marketing and advertising companies showed the lowest failure rate.