Defender One Security: Detailed Company Information & Corporate Profile
Summary
Defender One Security is a private security firm headquartered in Owings Mills, Maryland, founded in 2009 and staffed by 10–50 professionals with annual revenue ranging from $1 million to $10 million.
The company delivers tailored protection across numerous verticals. Its specialties include school & campus security services, commercial property security, cannabis dispensary security, healthcare and medical facility security, hospitality and event security, religious and community organization security, residential security for communities and HOAs, retail and financial institution security, executive and personal protection, on‑site guard services, fingerprinting, armed security guard services, unarmed security guard services, and private event security.
Leadership at Defender One Security features Protection Officer Seth Greenberg, Human Resources Manager Cynthia, Armed Security Guard Reid Hirsh, Security Officer Corey Weinapple, Managing Director Jennifer Krieger, Account Manager Anthony Santos, along with several other security officers who support the firm’s comprehensive service delivery.
| Defender One Security Website | defendersecure.com |
| Phone Number | 443-834-6697 |
| Industries | |
| Defender One Security Headquarters Address | 300 Red Brook Blvd, Owings Mills, Maryland, 21117 US |
| Company Size | 10-50 employees |
| Specialities & Services | School & Campus Security Services, Commercial Property Security Services, Cannabis Dispensary Security Services, Healthcare & Medical Facility Security Services , Hospitality & Event Security Services, Religious & Community Organization Security Services, Residential Security Services for Communities & HOAs, Retail & Financial Institution Security Services, Executive and Personal Protection Services, On-Site Security Guard Services, Fingerprinting Services, Armed Security Guard Services, Unarmed Security Guard Services, Private Event Security |
| Founded | 2009 |
| Estimated Annual Revenue | $1 - 10M |
| Updated: | 2026-09-30 |
Estimated Website Traffic
The chart shows a decline in traffic to the defendersecure.com website. In September, traffic decreased to 848, compared to 982 in the previous month. The highest traffic in 2026 was recorded in April, reaching 1120 visits.
Workforce Turnover
Length of Employment
Defender One Security's workforce includes employees across a wide range of tenure levels.
29% have been with the company for 1 to 2 years29% have been with the company for 3 to 4 years29% have been with the company for 8 to 10 years14% have been with the company for more than 11 years
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Defender One Security Corporate Information: FAQ
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