Brosnan Security

Brosnan is a full-service security, protective, investigative and consulting firm to a global network of clients. Headquartered in New York City, with branch locations in multiple states, Brosnan® is one of the largest privately held providers of technology-driven security services. With more than 500 years of law enforcement experience, Brosnan® understands the law, and more importantly, law breakers. We protect your people, property and assets with aggressive risk mitigation strategies and technologies