| Adt Security Services | Adt Security Services | — | (800) 743-4888 | Alarm and generators | Ventura · Ventura County | — | — |
| Allied Universal® Security Services | Allied Universal® Security Services | — | (805) 983-1204 | Alarm and generators | Ventura · Ventura County | — | — |
| Archon Protection Inc. | Archon Protection Inc. | — | (800) 274-5717 | Alarm and generators | Ventura · Ventura County | — | — |
| Cam-tec Security | David Jay Bierend | — | (818) 522 9701 | Alarm and generators | Simi Valley · Ventura County | — | — |
| Clay Commercial Security | Clay Commercial Security | info@claycommercialsecurity.com | (805) 312 5538 | Alarm and generators | Camarillo · Ventura County | — | — |
| Collings & Associates | Collings & Associates | — | (805) 658-0003 | Alarm and generators | Ventura · Ventura County | — | — |
| Covenant Protection | Covenant Protection | — | (877) 855-5217 | Alarm and generators | Simi Valley · Ventura County | — | — |
| D.a.d. Protection Services | D.a.d. Protection Services | — | (805) 625-3925 | Alarm and generators | Oxnard · Ventura County | — | — |
| Damewood Security & Sound | Damewood Security & Sound | — | (805) 987 0098 | Alarm and generators | Camarillo · Ventura County | — | — |
| Dean Security INC | John Thurman Dean | — | (818) 899 2222 | Alarm and generators | Simi Valley · Ventura County | — | — |
| Exclusive Alarm Services Of Ventura | Exclusive Alarm Services Of Ventura | — | (805) 215-8544 | Alarm and generators | Ventura · Ventura County | — | — |
| Ideal Security And Technology | Ideal Security And Technology | — | (805) 676-0278 | Alarm and generators | Ventura · Ventura County | — | — |
| Kt Security Services | Kt Security Services | info@ktsecurityservices.com | (805) 218-6729 | Alarm and generators | Ventura · Ventura County | — | — |
| Levi's Lock & Security | Levi's Lock & Security | — | (805) 424 7705 | Alarm and generators | Camarillo · Ventura County | — | — |
| Magnum Fence And Security INC | Jose Alfredo Chav Mendoza | — | (805) 641 3656 | Alarm and generators | Ventura · Ventura County | — | — |
| Oaks Security INC | Timothy Craig Mc Carthy | — | (805) 499 1500 | Alarm and generators | Thousand Oaks · Ventura County | — | — |
| Perimeter Security Systems | Myrna Cherie Bennett | — | (805) 644 7207 | Alarm and generators | Oxnard · Ventura County | — | — |
| Russell Security Solutions | Russell Security Solutions | — | (805) 660 4597 | Alarm and generators | Simi Valley · Ventura County | — | — |
| Securitas Security Services Usa City Center | Securitas Security Services Usa City Center | — | (805) 650-6285 | Alarm and generators | Ventura · Ventura County | — | — |
| Security Camera Tech Ventura | Security Camera Tech Ventura | — | (805) 539-0234 | Alarm and generators | Ventura · Ventura County | — | — |
| Security Contractors INC | Anthony Joseph Jr Mattivi | — | (818) 612 0536 | Alarm and generators | Westlake Village · Ventura County | — | — |
| Security Paving Company INC | Anthony Joseph Mattivi | northern@securitypaving.com | (818) 362 9200 | Alarm and generators | Westlake Village · Ventura County | — | — |
| Sunset Security And Automation | Kevin Timothy Peters | — | (805) 340 1308 | Alarm and generators | Camarillo · Ventura County | — | — |
| Technical Security Integration INC | Craig Raymond Swankosky | — | (805) 278 2325 | Alarm and generators | Oxnard · Ventura County | — | — |
| Ventura Low Voltage & Security LLC | Sherry Ann Cargnino | vlvsecurity@charter.net | (805) 218 9640 | Alarm and generators | Ventura · Ventura County | — | — |
| Vivint | Vivint | — | (661) 234-8289 | Alarm and generators | Ventura · Ventura County | — | — |
| World Security Low Voltage | World Security Low Voltage | — | (818) 415 2353 | Alarm and generators | Ojai · Ventura County | — | — |