Mammoth Security Inc. New Britain

Mammoth Security is a commercial security integrator headquartered in New Britain, Connecticut, with offices in New Haven, Norwalk, Bantam, Boston, and Holyoke. Since 2012, we've designed, installed, and serviced systems in more than 5,000 buildings — security cameras, door access control, fire alarms, burglar alarms, voice and data wiring, and 24/7 alarm monitoring.

Every technician is a Mammoth W-2 employee. Unlike national chains and private-equity rollups that send whichever subcontractor is cheapest that week, the company you hire is the company that shows up — on install day and every service call after.

Our client list includes the U.S. Coast Guard Academy, the City of New Britain, Greenwich Housing Authority, Yale New Haven Health, and WinnCompanies — and that's the short list. We hold direct dealer relationships with 22 manufacturers, including Verkada, Avigilon, Axis, DMP, and ICT, so we recommend the platform that fits your building, not a quota. Ranked #151 on Inc.'s 2024 Regionals list of the Northeast's fastest-growing companies. Privately owned — not private equity. No Subcontractors. Ever.