Company lists · Data refreshed September 2026

Top 11 Ten security companies based in Mississauga, Canada

Name: Ten security companies based in Mississauga, Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 41 companies tracked

RevenueBase identified 41 ten security companies headquartered in Mississauga, Canada as of September 2026 and tracks 2,055 professional contacts across them, including 93 with verified work emails. Toronto is the largest hub.

This list covers ten security companies headquartered in Mississauga, Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

41Companies

2,055Contacts tracked

93Verified emails

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The 11 largest ten security companies based in Mississauga, Canada

Ranked by team size

Top 11 of 41 ten security companies based in Mississauga, Canada, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to ten security companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Chubb Fire & Security Canada	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 21, 2026	1,001-5,000	759 contacts →
	Partial evidence “Chubb provides an unparalleled portfolio of security and life safety solutions to Canadian institutions, businesses and residences.” Source: RevenueBase Database · checked Sep 21, 2026
2	Regal Security INC	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 21, 2026	1,001-5,000	365 contacts →
	Partial evidence “The Regal Security mission is “Your Peace of Mind”™.” Source: RevenueBase Database · checked Sep 21, 2026
3	RBG Security INC	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 21, 2026	201-500	110 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
4	Xtreme Security INC	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 21, 2026	1,001-5,000	103 contacts →
	Partial evidence “At Xtreme Security, we deliver coast-to-coast coverage across Canada and the USA, backed by $10 million liability insurance and over 100 years of combined management experience.” Source: RevenueBase Database · checked Sep 21, 2026
5	Legacy Protection Services	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 21, 2026	201-500	89 contacts →
	Partial evidence “Legacy Protection Services offers a wide variety of premium security and investigative solutions that support customers in a range of dynamic situations and environments.” Source: RevenueBase Database · checked Sep 21, 2026
6	North American Security Services	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 21, 2026	11-50	37 contacts →
	Partial evidence “North American Security Sercvices (NASS) is a “people first” company that, through our team of highly trained professionals, has a mission to provide our clients the highest…” Source: RevenueBase Database · checked Sep 21, 2026
7	Colossus Security	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 21, 2026	11-50	17 contacts →
	Partial evidence “Colossus is a brand-agnostic security integrator built around one principle: the client comes first, not the manufacturer, not the margin.” Source: RevenueBase Database · checked Sep 21, 2026
8	MGL Protection Services	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 21, 2026	11-50	14 contacts →
	Partial evidence “MGL Protection Services is a Canadian security company; it was founded in 2016 and boasts a powerhouse senior staff with over twenty years experience in the industry.” Source: RevenueBase Database · checked Sep 21, 2026
9	Maxtech Security Systems	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 21, 2026	11-50	11 contacts →
	Partial evidence “At MAXtech Security Systems we pride ourselves in providing solutions for our clientele in a myriad of ways.” Source: RevenueBase Database · checked Sep 21, 2026
10	Vista Security & Investigations	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 21, 2026	501-1,000	3 contacts →
	Partial evidence “Vista Security & Investigations is a full-service security company that offers integrated security solutions ranging from security guard services, alarms, mobile services, CCTV…” Source: RevenueBase Database · checked Sep 21, 2026
11	Stonewall Security Services INC	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 21, 2026	51-200	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: ten security companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names ten security companies.
Partial evidence: Its own public description names part of ten security companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ten security companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 11 of 41 ten security companies based in Mississauga, Canada

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Ten security companies based in Mississauga, Canada at a glance

As of Sep 21, 2026

4.5%Verified-email coverage

50.1Average contacts per company

51-200Median size (employees)

229.3%Largest-city concentration · Toronto

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole Canada list rather than for Mississauga, so it is reported there. Company counts and contact totals on this page are exact for Mississauga, over 41 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among ten security companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Mississauga, Canada whose own description of what they do matches “ten security companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names ten security companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among ten security companies, and records with no verified work email. Companies headquartered outside Mississauga are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 93 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Ten security companies by metro in Canada

Ten security companies in Toronto94
Ten security companies in Mississauga41
Ten security companies in Montreal37
Ten security companies in Calgary35
Ten security companies in Edmonton33
Ten security companies in Vancouver28
Ten security companies in Ottawa25

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names ten security companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many ten security companies are there based in Mississauga, Canada?

RevenueBase identified 41 ten security companies headquartered in Mississauga, Canada as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Chubb Fire & Security Canada, headquartered in Mississauga, tops this list with the largest team on record.

Which city has the most ten security companies?

Toronto leads with 94 headquartered companies, followed by Mississauga (41) and Montreal (37).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 93 verified decision-maker contacts tracked across these 41 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.