Company lists · Data refreshed September 2026

Top 25 Managed security services companies based in Canada

Name: Managed security services companies based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 616 companies tracked

RevenueBase identified 616 managed security services companies headquartered in Canada as of September 2026 and tracks 9,795 professional contacts across them, including 2,332 with verified work emails and 456 with mobile numbers. Toronto is the largest hub.

This list covers managed security services companies headquartered in 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

616Companies

9,795Contacts tracked

2,332Verified emails

456Mobile numbers

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The 25 largest managed security services companies based in Canada

Ranked by team size

Top 25 of 616 managed security services companies based in Canada, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names managed security services companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Securitas CanadaIndirect evidence	North York, ON, CanadaHQ checked Sep 5, 2026	5,001-10,000	1,632
	“Over 90 years of protecting the things that matter, we’ve seen more than most.” Source: company website · checked Sep 5, 2026
2	Blackbird Security INCPartial evidence	Vancouver, BC, CanadaHQ checked Sep 5, 2026	1,001-5,000	554
	“Servicing Canada coast to coast, Blackbird provides professional security services that are customized, reliable, and flexible.” Source: company website · checked Sep 5, 2026
3	Commissionaires BCIndirect evidence	Vancouver, BC, CanadaHQ checked Sep 5, 2026	1,001-5,000	304
	“Commissionaires nationally is a private, Canadian, not-for-profit company with 15 independent divisions encompassing 50+ offices and more than employees.” Source: company website · checked Sep 5, 2026
4	Bulletproof, A GLI CompanyPartial evidence	Fredericton, NB, CanadaHQ checked Sep 5, 2026	201-500	274
	“Headquartered in Canada with locations across the US and around the globe, Bulletproof’s ultimate goal is to help your organization reduce IT, security, and/or compliance…” Source: company website · checked Sep 5, 2026
5	Trillium Information Security SystemsPartial evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	51-200	239
	“Trillium Information Security Systems (TISS) is a leading global provider of cybersecurity solutions and services, established in 2005.” Source: company website · checked Sep 5, 2026
6	ESI TechnologiesPartial evidence	Montreal, QC, CanadaHQ checked Sep 5, 2026	201-500	196
	“Since 1994, ESI’s focus has always been data management and protection.” Source: company website · checked Sep 5, 2026
7	MS SolutionsIndirect evidence	Québec, QC, CanadaHQ checked Sep 5, 2026	51-200	157
	“MS Solutions offers IT solutions for Quebec businesses.” Source: company website · checked Sep 5, 2026
8	Field EffectPartial evidence	Ottawa, ON, CanadaHQ checked Sep 5, 2026	51-200	150
	“Field Effect delivers intelligence-grade managed detection and response for the AI era.” Source: company website · checked Sep 5, 2026
9	Executek InternationalIndirect evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	201-500	120
	Source: company website · checked Sep 5, 2026
10	Wilsons SecurityPartial evidence	Dartmouth, NS, CanadaHQ checked Sep 5, 2026	51-200	119
	“Wilsons Security provides security solutions for homes throughout central Nova Scotia, and for businesses across Canada.” Source: company website · checked Sep 5, 2026
11	Supra ITSPartial evidence	Brampton, ON, CanadaHQ checked Sep 5, 2026	501-1,000	108
	“Supra ITS is an award-winning full-service technology partner offering 24x7 Managed IT & Cybersecurity Services, IT & AI Consulting, Cloud Services, and IT Project Support.” Source: company website · checked Sep 5, 2026
12	SecureopsStrong evidence	Montreal, QC, CanadaHQ checked Sep 5, 2026	51-200	106
	“SecureOps is a global managed security services provider (MSSP) with 25 years of experience strengthening the security maturity and resilience of enterprises and commercial…” Source: company website · checked Sep 5, 2026
13	S3 Technologies INCIndirect evidence	Montréal, QC, CanadaHQ checked Sep 5, 2026	51-200	104
	“Founded in 2003, S3 Technologies Inc.” Source: company website · checked Sep 5, 2026
14	Avante Security INCPartial evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	51-200	100
	“Avante Security Inc, an Avante Corp company, is known for being Toronto's most prestigious security provider with the fastest response times in Canada.” Source: company website · checked Sep 5, 2026
15	SRG Security Resource Group INCPartial evidence	Regina, SK, CanadaHQ checked Sep 5, 2026	501-1,000	91
	“SRG Security Resource Group Inc is a physical & cyber security company based in Regina, Saskatchewan.” Source: company website · checked Sep 5, 2026
16	ISA CybersecurityIndirect evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	51-200	86
	“ISA Cybersecurity is one of Canada’s leading cybersecurity services and solutions providers.” Source: company website · checked Sep 5, 2026
17	Westguard Security ServicesPartial evidence	Vancouver, BC, CanadaHQ checked Sep 5, 2026	51-200	61
	“Providing security solutions to Vancouver Ports, and Colleges.” Source: company website · checked Sep 5, 2026
18	Peregrine ProtectionPartial evidence	North York, ON, CanadaHQ checked Sep 5, 2026	201-500	59
	“We are a small security company who are committed to delivering exceptional value and service through fully integrated security solutions and systems/ From physical on-site…” Source: company website · checked Sep 5, 2026
19	IONIndirect evidence	Calgary, AB, CanadaHQ checked Sep 5, 2026	51-200	56
	“iON - We protect the brands you know.® (also known as iON United, or just iON) is one of Canada’s most trusted cybersecurity solution providers.” Source: company website · checked Sep 5, 2026
20	CruciallogicsPartial evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	51-200	48
	“We help organizations secure and manage their IT environments using the Microsoft-native technologies they already own.” Source: company website · checked Sep 5, 2026
21	GAM TechStrong evidence	Calgary, AB, CanadaHQ checked Sep 5, 2026	51-200	48
	“GAM Tech is a Canadian Managed Service Provider (MSP) and Cybersecurity company helping businesses simplify technology, strengthen security, and focus on growth.” Source: company website · checked Sep 5, 2026
22	ECS CanadaIndirect evidence	Québec, QC, CanadaHQ checked Sep 5, 2026	201-500	47
	“Fondé en 2013 par MM.” Source: company website · checked Sep 5, 2026
23	Access 2 Networks A2nStrong evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	11-50	46
	“Access 2 Networks is Canada’s premier network security provider, dedicated to helping organizations manage and protect their networks against internal and external security…” Source: company website · checked Sep 5, 2026
24	Streamscan CybersecurityIndirect evidence	Montreal, QC, CanadaHQ checked Sep 5, 2026	11-50	46
	“Since 2011, StreamScan has been committed to protecting critical businesses especially in the defense, aerospace, and critical infrastructure sectors from cyberattacks.” Source: company website · checked Sep 5, 2026
25	ALL Peace ProtectionPartial evidence	Grande Prairie, AB, CanadaHQ checked Sep 5, 2026	51-200	45
	“All Peace Protection has been Grand Prairie’s leader in the security field in Northern Alberta for more than forty years.” Source: company website · checked Sep 5, 2026

Showing 25 of 616 managed security services companies based in Canada

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Managed security services companies based in Canada at a glance

As of Sep 5, 2026

11-50Median size (employees)

TorontoLargest hub · 122 HQs

456Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

299

11-50

198

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Verified emails by last verification

0–30

2,211

31–60

114

61–90

90–180

180+

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 managed security services companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Canada whose own description of what they do matches “managed security services companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among managed security services companies, and records with no verified work email. Companies headquartered outside Canada 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 an evidence 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, 2,332 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 5, 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.

Managed security services companies by metro

Frequently asked

How many managed security services companies are there based in Canada?

RevenueBase identified 616 managed security services companies headquartered in 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?

Securitas Canada, headquartered in North York, tops this list with the largest team on record.

Which city has the most managed security services companies?

Toronto leads with 122 headquartered companies, followed by Montreal (50) and Calgary (45).

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 2,332 verified decision-maker contacts tracked across these 616 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 5, 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 SmartSearch, 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.