Company lists · Data refreshed September 2026

Top 25 Critical infrastructure protection companies based in Canada

Name: Critical infrastructure protection companies based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 267 companies tracked

RevenueBase identified 267 critical infrastructure protection companies headquartered in Canada as of September 2026 and tracks 2,730 professional contacts across them, including 415 with verified work emails. Toronto is the largest hub.

This list covers critical infrastructure protection 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 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 19, 2026 86% judged on-target in blind review

267Companies

2,730Contacts tracked

415Verified emails

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The 25 largest critical infrastructure protection companies based in Canada

Ranked by team size

Top 25 of 267 critical infrastructure protection companies based in Canada, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to critical infrastructure protection 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	Commissionaires BC	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 19, 2026	1,001-5,000	304 contacts →
	Indirect evidence “Commissionaires nationally is a private, Canadian, not-for-profit company with 15 independent divisions encompassing 50+ offices and more than employees.” Source: RevenueBase Database · checked Sep 19, 2026
2	SRG Security Resource Group INC	Indirect evidence	Regina, SK, CanadaHQ checked Sep 19, 2026	501-1,000	91 contacts →
	Indirect evidence “SRG Security Resource Group Inc is a physical & cyber security company based in Regina, Saskatchewan.” Source: RevenueBase Database · checked Sep 19, 2026
3	Emergency Security Management ESM	Indirect evidence	Markham, ON, CanadaHQ checked Sep 19, 2026	201-500	84 contacts →
	Indirect evidence “FOR OUR LATEST COMPANY INFO.” Source: RevenueBase Database · checked Sep 19, 2026
4	Peregrine Protection	Indirect evidence	North York, ON, CanadaHQ checked Sep 19, 2026	201-500	59 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 19, 2026
5	ION	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	51-200	56 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 19, 2026
6	Dnsnetworks Technology Company	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 19, 2026	51-200	38 contacts →
	Indirect evidence “We are a leading IT services provider based out of Ottawa, Montreal and Toronto.” Source: RevenueBase Database · checked Sep 19, 2026
7	360 Advanced Security Corporation	Indirect evidence	Etobicoke, ON, CanadaHQ checked Sep 19, 2026	51-200	36 contacts →
	Indirect evidence “Incorporated in 360 Advanced Security Corporation delivers highly advanced integrated security systems to our commercial customers.” Source: RevenueBase Database · checked Sep 19, 2026
8	Acumen	Indirect evidence	Burlington, ON, CanadaHQ checked Sep 19, 2026	11-50	34 contacts →
	Indirect evidence “A leader in our growing industry, Acumen provides modern and innovative solutions in the areas of Regulatory Compliance, Operational Technology, Cyber & Physical Security, and…” Source: RevenueBase Database · checked Sep 19, 2026
9	WWS	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “WWS (Worldwide Security Ltd.) is an ISO9001 certified security technology and communications integrator based in Mississauga, ON.” Source: RevenueBase Database · checked Sep 19, 2026
10	Technirise Consulting INC	Indirect evidence	Saskatoon, CanadaHQ checked Sep 19, 2026	1-10	25 contacts →
	Indirect evidence “At TechniRise Consulting, we are at the forefront of Cyber Security, providing comprehensive solutions to safeguard your digital assets.” Source: RevenueBase Database · checked Sep 19, 2026
11	Vcura Cybersecurity	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “VCURA delivers industry leading IT security, operations, technology, consulting and support with a responsibility focus.” Source: RevenueBase Database · checked Sep 19, 2026
12	Perceptage International	Indirect evidence	Mt Royal, QC, CanadaHQ checked Sep 19, 2026	51-200	19 contacts →
	Indirect evidence “Perceptage International est une société de services conseil en sécurité, spécialisée dans l'évaluation des menaces, le développement et la mise en œuvre de protocoles d'urgence…” Source: RevenueBase Database · checked Sep 19, 2026
13	Captosec Cybersecurity And IT Solutions For Business	Indirect evidence	Québec, QC, CanadaHQ checked Sep 19, 2026	11-50	17 contacts →
	Indirect evidence “CAPTOSEC, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
14	Xenoncyber Dynamics INC	Partial evidence	Kamloops, BC, CanadaHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “XenonCyber Dynamics develops cyber-informed energy systems and engineering solutions that improve how electrical infrastructure is understood, planned, and operated in mountain…” Source: RevenueBase Database · checked Sep 19, 2026
15	CMS Consulting	Indirect evidence	Fredericton, NB, CanadaHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “For many years CMS has been serving North America by delivering Information Technology consulting to our clients.” Source: RevenueBase Database · checked Sep 19, 2026
16	Sabytel Technologies, INC	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “With over 22 years of industry experience, Sabytel has cultivated a sterling reputation for providing strategic management consulting services to both public and private sectors.” Source: RevenueBase Database · checked Sep 19, 2026
17	Amsi Networks	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence “With over 25 years of experience, AMSi Networks is a leader in delivering advanced Cybersecurity solutions in the digital world.” Source: RevenueBase Database · checked Sep 19, 2026
18	Securu INC	Indirect evidence	Puslinch, ON, CanadaHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “Our vision is to continue to educate our community about the importance of dedicated security solutions providers and expand our network of trusted clients through our knowledge…” Source: RevenueBase Database · checked Sep 19, 2026
19	Sphyrna Security	Indirect evidence	Kanata, ON, CanadaHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “Sphyrna Security is a highly respected and innovative member of the security community.” Source: RevenueBase Database · checked Sep 19, 2026
20	Gardien Virtuel	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 19, 2026	201-500	11 contacts →
	Indirect evidence “Un savoir-faire en sécurité inégalé, Guidé par la confiance Gardien Virtuel comprend le cheminement vers une transformation numérique sécurisée.” Source: RevenueBase Database · checked Sep 19, 2026
21	Onpar Solutions	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “OnPar Solutions is a security consulting firm providing trusted physical and cybersecurity expertise to government, private sector, and not-for-profit organizations.” Source: RevenueBase Database · checked Sep 19, 2026
22	Stratus51	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “Stratus51 helps our customers build and maintain resilient IT & Security solutions that are not only innovative, but also cost-effective.” Source: RevenueBase Database · checked Sep 19, 2026
23	Cybershell	Indirect evidence	Montréal, CanadaHQ checked Sep 19, 2026	1-10	10 contacts →
	Indirect evidence “We provide ingenious and cost effective cybersecurity solutions and intelligence.” Source: RevenueBase Database · checked Sep 19, 2026
24	PM Scada Cyber Defense	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “PM SCADA Cyber Defense was founded in 2009 by leading cybersecurity architects.” Source: RevenueBase Database · checked Sep 19, 2026
25	Sting Investigations INC	Indirect evidence	New Westminster, BC, CanadaHQ checked Sep 19, 2026	1-10	10 contacts →
	Indirect evidence “STING is a specialist security consulting, investigations, training and business risk agency providing intelligent investigative and guarding solutions for the retail…” Source: RevenueBase Database · checked Sep 19, 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: critical infrastructure protection 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 critical infrastructure protection companies.
Partial evidence: Its own public description names part of critical infrastructure protection companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name critical infrastructure protection 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 25 of 267 critical infrastructure protection companies based in Canada

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Critical infrastructure protection companies based in Canada at a glance

As of Sep 19, 2026

15.2%Verified-email coverage

10.2Average contacts per company

1-10Median size (employees)

22.5%Largest-city concentration · Toronto

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

167

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 267 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 critical infrastructure protection 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 Canada whose own description of what they do matches “critical infrastructure protection 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 critical infrastructure protection 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 critical infrastructure protection 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 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, 415 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 19, 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.

Critical infrastructure protection companies by metro

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 critical infrastructure protection 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 critical infrastructure protection companies are there based in Canada?

RevenueBase identified 267 critical infrastructure protection 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?

Commissionaires BC, headquartered in Vancouver, tops this list with the largest team on record.

Which city has the most critical infrastructure protection companies?

Toronto leads with 60 headquartered companies, followed by Calgary (28) and Ottawa (26).

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 415 verified decision-maker contacts tracked across these 267 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 19, 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.