Mitigate liability at your property and minimize risk and financial loss to your home or business when you turn to the professionals at Alliance Detective & Security Service, Inc. 

We'll help you fulfill your public safety mission by providing safe, secure, and effective services to your staff, residents, and visitors. Experienced, accountable, and dedicated since 1975, Alliance offers training and results that exceed industry standards.

We are a resilient small business that can meet your security needs at competitive prices.

At Alliance Detective & Security Service, Inc, we are dedicated professionals in a bias-free workplace who create lasting relationships with our clients and the communities within which we serve. 

We are committed to providing consistent professional security services that will exceed your expectations by working in partnership to help in crime prevention, reduce fear of crime, and improve the quality of life. 

We pride ourselves on being a proactive security company.

Recognized at Federal, State, and City Levels

At the U.S. federal level, Alliance is counted as a Woman-Owned Small Business (WOSB) by the Small Business Administration. We serve the New England region.

We are a Supplier Diversity Office (SDO) and Woman Business Enterprise (WBE), certified by the Commonwealth of Massachusetts Operational Services Division.

The city of Boston Office of Small Business Development counts us as a Small Business Enterprise (SBE) as well as a WBE. Call us now at (617) 203-6234 for more info.

Enrollment Agent for Idemia

We’re an enrollment agent for Idemia and capture digital fingerprinting when you need to be fingerprinted for your job.