We provide a range of security services to meet your needs. Our highly trained professionals are dedicated to ensuring the safety and security of your property, assets, and people.Housing

Diligent Security will secure your people, your property and your assets by understanding and reducing security risk.

Providing services for several locations, Diligent Security is developing in one of the forerunners of the Security Industry in the Inland Empire. Employing more than 100 employees, Diligent Security thrives to do their part in the community.



Our security guards are highly trained professionals who are equipped to handle a range of security situations. We provide a range of security guard services, including static guarding, mobile patrols, and event security.

The teamwork of Diligent Security Services has been a valued part of the success of Critical Mind Inc. We are assured that Diligent Security Services professionalism, dedication to excellence and above and beyond efforts will remain for Critical Mind Inc. We look forward with anticipation in continuing our partnership with Diligent Security Services.

Spencer Vodnoy

Co-Founder & CEO,, Criical Mind Inc.

I would like to express my appreciation to Diligent Security Services and their staff for the exceptional work they have provided here. Their guards have showed phenomenal care and attention to our elderly tenants’ safety. Diligent Security guards has received very high remarks from our tenants regarding the service they provide. We look forward to many years of service from Diligent Security Service.

Diane Hall

Property Manager, Sonrise Senior Villas Apartment