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One Security Group is based in New York City and one of the leading full service security companies in the tri-state area. We are privately owned and operated, and pride ourselves in providing highly personalized service.

We were founded on the philosophy of offering professional and cost-effective security services while building a solid working relationship with our clients. The philosophy of our company has always been based on the emphasis of personal service and our success to date underlines that concept. One Security Group is committed to personalized, attention-to-detail service that only a privately owned company can provide.



Our team approach brings sensible and creative solutions so you can focus on personal and business priorities. One Security Group offers a full spectrum of security and protective services to ensure that your needs are met in every circumstance. From special events, site security, executive protection, private investigations and electronic surveillance systems – we have the experience, specialized knowledge and operational capabilities to implement custom programs that provide effective security solutions to address your unique safety and security requirements.

While we are based in New York City, our comprehensive network of affiliate offices allow us the flexibility to service your needs nationwide.

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