Company lists · Data refreshed September 2026

Top 25 Critical infrastructure security firms based in Canada

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

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 235 companies tracked

RevenueBase identified 235 critical infrastructure security firms headquartered in Canada as of September 2026 and tracks 1,914 professional contacts across them, including 307 with verified work emails. Toronto is the largest hub.

This list covers critical infrastructure security firms 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 27, 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 27, 2026 86% judged on-target in blind review

235Companies

1,914Contacts tracked

307Verified emails

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The 25 largest critical infrastructure security firms based in Canada

Ranked by team size

Top 25 of 235 critical infrastructure security firms based in Canada, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to critical infrastructure security firms: 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 27, 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 27, 2026
2	Xguard	Partial evidence	Montreal, QC, CanadaHQ checked Sep 27, 2026	201-500	94 contacts →
	Partial evidence “Leader in security and traffic control solutions and services, XGuard helps businesses achieve their objectives by protecting their material and human assets.” Source: RevenueBase Database · checked Sep 27, 2026
3	Emergency Security Management ESM	Indirect evidence	Markham, ON, CanadaHQ checked Sep 27, 2026	201-500	84 contacts →
	Indirect evidence “FOR OUR LATEST COMPANY INFO.” Source: RevenueBase Database · checked Sep 27, 2026
4	Streamscan Cybersecurity	Strong evidence	Montreal, QC, CanadaHQ checked Sep 27, 2026	11-50	46 contacts →
	Strong evidence “Since 2011, StreamScan has been committed to protecting critical businesses especially in the defense, aerospace, and critical infrastructure sectors from cyberattacks.” Source: RevenueBase Database · checked Sep 27, 2026
5	360 Advanced Security Corporation	Partial evidence	Etobicoke, ON, CanadaHQ checked Sep 27, 2026	51-200	36 contacts →
	Partial evidence “Incorporated in 360 Advanced Security Corporation delivers highly advanced integrated security systems to our commercial customers.” Source: RevenueBase Database · checked Sep 27, 2026
6	Secure Defence Corporation	Partial evidence	Richmond, BC, CanadaHQ checked Sep 27, 2026	11-50	27 contacts →
	Partial evidence “Secure Defence Corporation offers specialized security and surveillance solutions tailored to the unique nature and needs of the construction industry.” Source: RevenueBase Database · checked Sep 27, 2026
7	Sentinel Security	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 27, 2026	201-500	27 contacts →
	Indirect evidence “Founded in 1998 by Mr.” Source: RevenueBase Database · checked Sep 27, 2026
8	SSRG	Partial evidence	Vancouver, CanadaHQ checked Sep 27, 2026	51-200	27 contacts →
	Partial evidence “Lions Gate Risk Management Group was acquired by Scarlet Security & Risk Group (SSRG) in 2022.” Source: RevenueBase Database · checked Sep 27, 2026
9	Paladin Risk Solutions INC	Indirect evidence	Burnaby, BC, CanadaHQ checked Sep 27, 2026	51-200	26 contacts →
	Indirect evidence “Paladin Risk Solutions offers a full suite of specialized risk and investigative services, to mitigate risk and corporate concerns around reputation, human safety, and business…” Source: RevenueBase Database · checked Sep 27, 2026
10	Risk Control Canada	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 27, 2026	51-200	26 contacts →
	Indirect evidence “Risk Control Canada Inc.” Source: RevenueBase Database · checked Sep 27, 2026
11	Pivot Security	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	501-1,000	26 contacts →
	Partial evidence “Pivot Security is a portfolio of brands dedicated to making the world a safer place.” Source: RevenueBase Database · checked Sep 27, 2026
12	SSC Security Services Corp	Partial evidence	Regina, SK, CanadaHQ checked Sep 27, 2026	501-1,000	23 contacts →
	Partial evidence “Security Services Corp.” Source: RevenueBase Database · checked Sep 27, 2026
13	Canary Trap	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 27, 2026	11-50	21 contacts →
	Partial evidence “Canary Trap is a North American offensive security firm that helps organizations validate their security before attackers do.” Source: RevenueBase Database · checked Sep 27, 2026
14	Perceptage International	Indirect evidence	Mt Royal, QC, CanadaHQ checked Sep 27, 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 27, 2026
15	Colossus Security	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 27, 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 27, 2026
16	Xenoncyber Dynamics INC	Partial evidence	Kamloops, BC, CanadaHQ checked Sep 27, 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 27, 2026
17	Jtfsecurity Group INC	Partial evidence	East York, ON, CanadaHQ checked Sep 27, 2026	51-200	15 contacts →
	Partial evidence “Robust, Reliable and Ethical Security Solutions for a Challenging World.” Source: RevenueBase Database · checked Sep 27, 2026
18	Sabytel Technologies, INC	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 27, 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 27, 2026
19	Amsi Networks	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 27, 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 27, 2026
20	Sandhurst Consulting	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 27, 2026	11-50	12 contacts →
	Indirect evidence “Every organization is faced with threats to its operations, including floods, wildfires, spills, cyber-attacks, pandemics, or safety incidents.” Source: RevenueBase Database · checked Sep 27, 2026
21	Securu INC	Partial evidence	Puslinch, ON, CanadaHQ checked Sep 27, 2026	11-50	12 contacts →
	Partial 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 27, 2026
22	Sphyrna Security	Partial evidence	Kanata, ON, CanadaHQ checked Sep 27, 2026	11-50	11 contacts →
	Partial evidence “Sphyrna Security is a highly respected and innovative member of the security community.” Source: RevenueBase Database · checked Sep 27, 2026
23	Onpar Solutions	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 27, 2026	11-50	11 contacts →
	Partial 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 27, 2026
24	Stratus51	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 27, 2026	11-50	10 contacts →
	Partial 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 27, 2026
25	Signal Of Ottawa	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 27, 2026	201-500	10 contacts →
	Partial evidence “The vision of Signal of Ottawa is to provide a full suite of world-class and industry-leading security services for residential, commercial, retail and institutional customers in…” Source: RevenueBase Database · checked Sep 27, 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 security firms. 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 security firms.
Partial evidence: Its own public description names part of critical infrastructure security firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name critical infrastructure security firms. 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 235 critical infrastructure security firms based in Canada

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Critical infrastructure security firms based in Canada at a glance

As of Sep 27, 2026

16.0%Verified-email coverage

8.1Average contacts per company

1-10Median size (employees)

21.3%Largest-city concentration · Toronto

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

126

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 235 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 security firms, 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 security firms”. 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 security firms), 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 security firms, 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, 307 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 27, 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 security firms 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 security firms, 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 security firms are there based in Canada?

RevenueBase identified 235 critical infrastructure security firms 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 security firms?

Toronto leads with 50 headquartered companies, followed by Ottawa (25) and Calgary (22).

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 307 verified decision-maker contacts tracked across these 235 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 27, 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.