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Northwest Security Services delivers reliable security services in Ontario, Canada. Our skilled security guards, mobile patrol units, and attentive concierge services. Northwest Security Company provides tailored security guard services in Ontario, Canada to protect construction sites, businesses, and valuables. Northern Security Services offers professional security guard officer services in Toronto, Mississauga, Hamilton and Niagara Falls, Sudbury, Barrie, Ottawa, Brampton, Vaughan, Oshawa, Guelph, London, Brantford, Cambridge, Kitchener, Windsor, Stratford, Kingston, Newmarket, Haldimand County, Thorold, Clarence-Rockland, Welland, Milton, Port Colborne, Ingersoll, Quinte West, Kawartha Lakes, Leamington, Chatham-Kent, Belleville, Cornwall, Pickering, Woodstock, Brant, Richmond Hill, Brockville, Kenora, North Bay, Timmins, Owen Sound, Markham, Elliot Lake, Sarnia, Oakville, Peterborough, Thunder Bay, Sault Ste. Marie, St. Catharines, Burlington and Ontario Canada. Our Uniformed Security Guards; Security Patrol Services; Concierge Services; Mobile Patrol Services; Risk & Threat Analysis; Investigations; Executive Protection.