Company lists · Data refreshed September 2026

Top 25 Managed security service providers based in Canada

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

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 825 companies tracked

RevenueBase identified 825 managed security service providers headquartered in Canada as of September 2026 and tracks 7,502 professional contacts across them, including 3,210 with verified work emails and 624 with mobile numbers. Toronto is the largest hub.

This list covers managed security service providers 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

825Companies

7,502Contacts tracked

3,210Verified emails

624Mobile numbers

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The 25 largest managed security service providers based in Canada

Ranked by team size

Top 25 of 825 managed security service providers 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 service providers: 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	EsentireIndirect evidence	Waterloo, ON, CanadaHQ checked Sep 5, 2026	501-1,000	649
	“eSentire is a leader in Controlled Autonomy SecOps, protecting organizations across 35+ industries around the world.” Source: company website · checked Sep 5, 2026
2	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
3	f12.netPartial evidence	Edmonton, AB, CanadaHQ checked Sep 5, 2026	201-500	270
	“F12.net is dedicated to equipping business leaders, IT decision-makers, and their teams with the tools and strategies needed to strengthen their cyber security posture.” Source: company website · checked Sep 5, 2026
4	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
5	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
6	VictrixIndirect evidence	Montréal, QC, CanadaHQ checked Sep 5, 2026	201-500	177
	“Founded in 2003, Victrix is one of the largest IT services companies in Quebec with over 200 professionals.” 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	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
9	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
10	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
11	Exchange Technology ServicesIndirect evidence	Winnipeg, MB, CanadaHQ checked Sep 5, 2026	51-200	93
	“Exchange Technology Services is the only IT Total Solution Provider (TSP) in Manitoba.” Source: company website · checked Sep 5, 2026
12	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
13	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
14	Tecnet Canada INCIndirect evidence	Victoria, BC, CanadaHQ checked Sep 5, 2026	51-200	85
	“The Real People Behind Technology.” Source: company website · checked Sep 5, 2026
15	PlurilockIndirect evidence	Victoria, BC, CanadaHQ checked Sep 5, 2026	51-200	63
	“Plurilock is a world-class consultancy, systems integrator, full-stack technology reseller, and ecosystem of experts.” Source: company website · checked Sep 5, 2026
16	RhesusIndirect evidence	Victoriaville, QC, CanadaHQ checked Sep 5, 2026	51-200	60
	“Le bon partenaire TI change tout, surtout lorsque l’imprévisible survient.” Source: company website · checked Sep 5, 2026
17	Compuvision SystemsPartial evidence	Edmonton, AB, CanadaHQ checked Sep 5, 2026	501-1,000	59
	“VC3, a market-leading managed service provider serving municipalities and commercial businesses across 22 U.S.” Source: company website · checked Sep 5, 2026
18	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
19	Cybersecurity UmbrellaIndirect evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	51-200	54
	“Cybersecurity Umbrella Corp delivers AI-driven cybersecurity solutions tailored for fintech, enterprises, governments, educators, and digital platforms.” Source: company website · checked Sep 5, 2026
20	Okiok Data LTDPartial evidence	Laval, QC, CanadaHQ checked Sep 5, 2026	11-50	49
	“Just like the Wright brothers forever changed the face of aviation, OKIOK has been pushing back the boundaries of innovation in information security since the early beginnings of…” Source: company website · checked Sep 5, 2026
21	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
22	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
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	Expera Information Technology INCStrong evidence	Calgary, AB, CanadaHQ checked Sep 5, 2026	51-200	44
	“Expera delivers World-Class IT Managed Services and Cyber Security Solutions.” Source: company website · checked Sep 5, 2026

Showing 25 of 825 managed security service providers based in Canada

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Managed security service providers based in Canada at a glance

As of Sep 5, 2026

1-10Median size (employees)

TorontoLargest hub · 174 HQs

624Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

512

11-50

238

51-200

201-500

501-1,000

10001+

Verified emails by last verification

0–30

3,032

31–60

166

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 service providers, 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 service providers”. 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 service providers, 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, 3,210 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 service providers by metro

Frequently asked

How many managed security service providers are there based in Canada?

RevenueBase identified 825 managed security service providers 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?

Esentire, headquartered in Waterloo, tops this list with the largest team on record.

Which city has the most managed security service providers?

Toronto leads with 174 headquartered companies, followed by Montreal (97) and Calgary (66).

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 3,210 verified decision-maker contacts tracked across these 825 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.