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Are You Looking for Security Systems & Services in California?

Explore 498 security businesses across California, including Los Angeles, San Diego and Fresno, offering alarm systems, monitoring and protection services. Read customer reviews, check service coverage and contact suitable providers about estimates.
Agoura Hills (1)
Aliso Viejo (1)
Anaheim (7)
Angels Camp (1)
Antioch (2)
Aptos (1)
Arnold (1)
Atwater (1)
Bakersfield (6)
Belmont (1)
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Berkeley (1)
Beverly Hills (5)
Brea (2)
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Burbank (1)
Calabasas (2)
Camarillo (2)
Campbell (2)
Carlsbad (2)
Cathedral City (1)
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Chico (1)
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Chula Vista (1)
Citrus Heights (1)
City of Industry (2)
Claremont (1)
Clovis (2)
Concord (4)
Corona (4)
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Cotati (1)
Covina (2)
Culver City (2)
Diamond Bar (1)
Downey (2)
Dublin (1)
El Cajon (4)
El Dorado Hills (1)
El Monte (2)
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Emeryville (1)
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Escondido (7)
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Fresno (16)
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Hayward (6)
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Los Angeles (29)
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Novato (1)
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Temecula (2)
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Torrance (4)
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Ventura (4)
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Walnut (2)
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Westlake Village (4)
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Wildomar (1)
Windsor (2)
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Yorba Linda (1)
Baker Systems
48 Years
Emergency
Not rated yet
Baker Systems
48 Years
Emergency
Not rated yet
45+ years of specialized security system expertise
Trusted security solutions provider in Upland, CA since 1978. Offering intrusion systems, fire alarms, access control, and structured wiring services for residential and commercial properties across Southern California.
Intrusion Systems Fire Alarm Systems Access Control Systems
(800) 986-2372 Call Profile
Not rated yet
Isse Services
Not rated yet
We offer 20+ years of specialized cybersecurity experience with the U.S. Department of Defense.
Isse Services offers expert cybersecurity solutions, CMMC compliance services, and 24/7 managed security monitoring to protect your business assets and ensure regulatory compliance.
Managed Security Services CMMC Compliance Risk Management Framework
Profile
Not rated yet
Templar Titan
25 Years
Emergency
Not rated yet
We deploy former U.S. Navy SEALs and law enforcement experts with specialized crisis response training
Templar Titan offers comprehensive security and risk management solutions, including disaster response, executive protection, and strategic consulting, delivered by a team of elite military and law enforcement professionals.
Corporate Building Security Contingency Planning Executive Protection
(800) 779-0332 Call Profile
Not rated yet
Grabba
16 Years
Not rated yet
Over 20 years of experience in biometric technology development.
Discover Grabba' secure biometric and data capture solutions for identity verification. Trusted by governments and businesses worldwide, our rugged devices ensure compliance and reliability in critical operations.
Biometric Scanners RFID Readers Passport Readers
(818) 729-1954 Call Profile
Not rated yet
Yubico
Not rated yet
We offer FIPS-certified security keys meeting NIST SP800-63B AAL3 requirements for regulated industries
Yubico's YubiKey hardware security keys provide phishing-resistant authentication for enterprises and individuals. Protect accounts with FIDO2/WebAuthn compliance and multi-protocol support.
YubiKey 5 Series Security Key Series YubiKey Bio Series
(408) 774-4064 Call Profile
Not rated yet
Blockaides
16 Years
Not rated yet
We offer over a decade of expertise in security bollard solutions.
Discover durable, American-made security bollards and barriers at Blockaides in Placentia, CA. Protect your property with customizable solutions for parking lots, schools, airports, and more.
Crash Rated Bollards Lighted Bollards Removable Bollards
(909) 217-3412 Call Profile
Not rated yet
Avigilon
Emergency
Not rated yet
We implement AI analytics for real-time threat detection and forensic search
Avigilon delivers AI-powered security solutions including video surveillance, access control, and analytics to protect businesses globally. Trusted by 100,000+ organizations across 150 countries.
Video Surveillance Access Control AI Analytics
(844) 636-7284 Call Profile
Not rated yet
Brownstone Private Security
26 Years
Emergency
Not rated yet
We offer 300+ years of combined security industry experience
Brownstone Private Security offers 24/7 armed and unarmed security services, robotics security, and access control systems in Phoenix, AZ. Trusted expertise for businesses and events since 2000.
Armed Security Unarmed Security Event Security
(310) 297-3600 Call Profile
Not rated yet
FLIR Eoc
Not rated yet
We offer over 50 years of expertise in thermal imaging technology.
Discover FLIR Eoc's cutting-edge thermal cameras, security systems, and infrared training. Trusted for precision, durability, and innovation in industrial, commercial, and public safety applications.
Thermal Imaging Cameras Security Systems Infrared Training
(805) 642-4645 Call Profile
Not rated yet
Custom Protective Services
37 Years
Emergency
Not rated yet
We offer 35+ years of specialized security expertise.
Custom Protective Services offers top-tier security solutions in Torrance, CA, including personal protection, surveillance, and risk assessment. Trusted by businesses and VIPs since 1989.
Risk Assessment Personal Protection Uniformed Security
(310) 769-0747 Call Profile