Vector Security is perceived as one of Global Guardian's biggest rivals. Vector Security was founded in 1970 in Warrendale, Pennsylvania. Vector Security is in the Safety Equipment field. Vector Security generates $295M more revenue than Global Guardian.
Protection 1 is Global Guardian's #2 rival. Protection 1 is a Private company that was founded in 1988 in Lombard, Illinois. Protection 1 competes in the Safety Equipment field. Compared to Global Guardian, Protection 1 has 1,305 more employees.
Telgian is one of Global Guardian's top competitors. Telgian's headquarters is in Phoenix, Arizona, and was founded in 1985. Like Global Guardian, Telgian also operates in the Software, Internet & Computer Services industry. Telgian generates 145% of Global Guardian's revenue.