Anwar D.
8/8/2020
Professional company, owners, and staff with very responsive and great customer service support when I needed it. The security staff that were assign to me showed up on time and executed the...
ADT Security Services
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66 Franklin St
Oakland, CA 94607
Diligence Security Group in Oakland, CA offers a comprehensive range of security services, including unarmed and armed security officers, patrol, loss prevention, firewatch, private investigations, and various training programs to ensure the safety and protection of organizations and their sensitive data.
With a focus on prevention and protection, Diligence Security Group combines efficient security personnel with cutting-edge technology to create a secure environment for employees, clients, and assets, helping businesses mitigate risks and enhance overall security measures.
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Reviews
4.56 reviewsJ L.
10/18/2025
Dangerous and Intimidating Behavior from Security Driver I had a disturbing experience with one of this company's security drivers on October 18, 2025, in Montclair, CA. While driving on the...
Bettye D.
12/14/2021
Great company! Very reliable and consistent security. Officers well groomed and professional while maintaining interpersonal accurate information. In a respectful manner getting their job done....
sha b.
12/16/2021
Great company consistant professional,I love the staff they respond quickly. Would recommend for sure!!!!!!!!!!!!!!!!!!!
Barret W.
9/4/2020
Great service, professional, and punctual. Highly recommend. Most importantly, deep expertise that inspires confidence in the job.
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