trusted to protect some of the nation’s largest retailers & Fortune 500 brands
40+
Years of experience
100%
licensed guards
24/7
security services
A Higher Standard of Protection
Green Knight Security is a California based protection and prevention security firm focusing on professional guard services.
Our team brings 40+ years of combined experience across law enforcement, military service, and loss prevention for some of the nation’s largest names. We hold every client to an extremely high standard, whether we’re protecting a single storefront or a statewide portfolio.
Founded by a former police officer who believed protection should be personal, what sets us apart is how we work: we meet you in person, match vetted personnel to the exact demands of your site, and treat every assignment as if it’s our only post.
Dependable, accountable, and always reachable. That’s our promise — to show up, listen, and deliver.
How We Protect You
Green Knight Security operates through four major divisions: Security, Investigative, Protection, and Loss Prevention.
Each sector is run independently with personnel trained specifically for that area; this means every client gets the focused attention of a specialist, not a generalist.
Our teams are built for real-world experience with armed, unarmed, and uniformed security guards that bring extensive field training to every post.
Industries Served: Commercial, Construction, Corporate, Government, HOA, Hospitality, Logistics, Retail and more
• Executive Protection
• Estate Security
• Investigations
• Loss Prevention
• Off Duty Officers
• Patrol
• School/Campus
• Uniformed Security
• Consultation
• Active Shooter
• Tactical Training
• Mobile Field Force
• Firearms Training
• Online Training
• Intelligence Training
Green Knight Security now offers
Security camera Trailers
24/7 Security and Rapid Deployment
Our Security Services are Available 24/7
Security problems don’t just arise during business hours, which is why Green Knight Security is available around the clock. Our unarmed and armed security personnel, as well as off-duty law enforcement officers, are ready to attend to you regardless of the time of day.
Our security firm aims to deliver unrivaled, personalized security for every customer. We make it a priority to understand and meet each client’s specific needs, backed by a diverse, highly skilled team we’ve carefully recruited and nurtured. We take immense pride in ensuring our customers’ security, trust, and integrity.
“If you have a question, please pick up the phone and call us directly — we welcome the opportunity to speak with you.”
2025 -2026 - GKS IMPACT REPORT & OVERVIEW
Green Knight Security (GKS) is committed to providing the most professional security staff and protective services at the highest level, on time and under budget. GKS achieves this by hiring top employees and partnering with the best companies. It really is a team effort!
trusted to protect some of the nation’s largest retailers &
Fortune 500 brands
The services provided were exemplary and all staff was diligent in providing us with securely controlled premises.
— Doug C.
We are so impressed with Green Knight Security and look forward to continuing to work with you in the future.
— Daniela S.
I have used this company for several years now to staff my security needs… would highly recommend them.”
— Ed G.
Contact Us
Our professionals at Green Knight Security follow a traditional, high-quality, and extremely innovative style of customer care. With decades of experience, our team members offer new ideas and a strong dedication to our client-centered philosophy.
Our dedication to knowledge and commitment to providing consistently better service has led to a standard of service that is unmatched by our competitors.
“If you have a question, please pick up the phone and call us directly — We welcome the opportunity to speak with you.”
Call us at: 844-GKS-TEAM (844-457-8326) to speak with one of our representatives.