Company lists · Data refreshed September 2026

Top 25 Cybersecurity businesses based in Toronto, Canada

Name: Cybersecurity businesses based in Toronto, Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 306 companies tracked

RevenueBase identified 306 cybersecurity businesses headquartered in Toronto, Canada as of September 2026 and tracks 2,129 professional contacts across them, including 720 with verified work emails. Toronto is the largest hub.

This list covers cybersecurity businesses headquartered in Toronto, 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

306Companies

2,129Contacts tracked

720Verified emails

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The 25 largest cybersecurity businesses based in Toronto, Canada

Ranked by team size

Top 25 of 306 cybersecurity businesses based in Toronto, Canada, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity businesses: 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	Trillium Information Security Systems	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	239 contacts →
	Strong evidence “Trillium Information Security Systems (TISS) is a leading global provider of cybersecurity solutions and services, established in 2005.” Source: RevenueBase Database · checked Sep 21, 2026
2	ISA Cybersecurity	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	86 contacts →
	Strong evidence “ISA Cybersecurity is one of Canada’s leading cybersecurity services and solutions providers.” Source: RevenueBase Database · checked Sep 21, 2026
3	MIT Consulting	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	62 contacts →
	Indirect evidence “Canada's Best Managed IT Firm 2017-21 Top 500 MSP's in the world 2019 Growth 500 2013-19 Microsoft Gold Partner and much more.” Source: RevenueBase Database · checked Sep 21, 2026
4	Boxx Insurance INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	54 contacts →
	Indirect evidence “BOXX Insurance helps businesses and individuals insure and defend against cyber and technology risks, harnessing the power of ALL IN ONE Cyber and Technology Insurance and…” Source: RevenueBase Database · checked Sep 21, 2026
5	Cybersecurity Umbrella	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	54 contacts →
	Strong evidence “Cybersecurity Umbrella Corp delivers AI-driven cybersecurity solutions tailored for fintech, enterprises, governments, educators, and digital platforms.” Source: RevenueBase Database · checked Sep 21, 2026
6	Cruciallogics	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	48 contacts →
	Indirect evidence “We help organizations secure and manage their IT environments using the Microsoft-native technologies they already own.” Source: RevenueBase Database · checked Sep 21, 2026
7	Reliance North America	Indirect evidence	Toronto, CanadaHQ checked Sep 21, 2026	51-200	43 contacts →
	Indirect evidence “As our name suggests, our customers rely on us in providing suitable technology inputs to support their business goals.” Source: RevenueBase Database · checked Sep 21, 2026
8	Cyderes	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	501-1,000	37 contacts →
	Strong evidence “Cyderes is a global cybersecurity powerhouse offering comprehensive solutions around managed security, identity and access management, and professional services.” Source: RevenueBase Database · checked Sep 21, 2026
9	Iamconcepts	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	36 contacts →
	Indirect evidence “A Proudly Canadian Company!” Source: RevenueBase Database · checked Sep 21, 2026
10	Elastify	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	34 contacts →
	Indirect evidence “As your business grows, keeping up with compliance requirements and strengthening your security posture can be a real challenge.” Source: RevenueBase Database · checked Sep 21, 2026
11	Hudson Technology	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	31 contacts →
	Strong evidence “Hudson Technology is a Managed IT Services and Cybersecurity provider (MSP/MSSP) helping businesses across Canada and the U.S.” Source: RevenueBase Database · checked Sep 21, 2026
12	Techify INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	31 contacts →
	Indirect evidence “Eager to start using AI but don't know where to start?” Source: RevenueBase Database · checked Sep 21, 2026
13	Fusion Computing Limited	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	31 contacts →
	Strong evidence “Fusion Computing is a Canadian-owned managed IT and cybersecurity firm serving businesses across Toronto, Hamilton, the GTA, and Metro Vancouver since 2012.” Source: RevenueBase Database · checked Sep 21, 2026
14	Business Cloud INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	30 contacts →
	Indirect evidence “Business Cloud manages and supports your business technology, preventing problems so that you can focus on scaling your business.” Source: RevenueBase Database · checked Sep 21, 2026
15	Tuor Networks	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	27 contacts →
	Indirect evidence “Tuor Networks provides comprehensive end-to-end Managed IT Services to support our clients’ business strategies and future growth plans and help solve even their most complex…” Source: RevenueBase Database · checked Sep 21, 2026
16	SUN IT Solutions	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	23 contacts →
	Indirect evidence “Sun IT Solutions - Canada's premier IT consulting firm offering top-notch services nationwide, including Managed IT Services, IT Support Services, IT Outsourcing Services, Tech…” Source: RevenueBase Database · checked Sep 21, 2026
17	BDATA	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	21 contacts →
	Indirect evidence “For critical infrastructure companies, cyber threats are an alarming and growing challenge.” Source: RevenueBase Database · checked Sep 21, 2026
18	Armour Cybersecurity	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	20 contacts →
	Strong evidence “Armour Cybersecurity protects organizations from the multi-faceted, ever-evolving cyber threats that put businesses at risk every day.” Source: RevenueBase Database · checked Sep 21, 2026
19	Intercast	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	20 contacts →
	Indirect evidence “Intercast's mission is to be a strategic resource to our clients in Risk Reduction.” Source: RevenueBase Database · checked Sep 21, 2026
20	Datametrex AI LTD	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	20 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
21	Scriptics	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	201-500	20 contacts →
	Strong evidence “At Scriptics Technologies, we have extensive experience working with a variety of technologies, including Salesforce, BlackBerry cybersecurity, Magnet Forensic, AWS, Azure, and…” Source: RevenueBase Database · checked Sep 21, 2026
22	Fulcrum IT Partners	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	501-1,000	18 contacts →
	Indirect evidence “Fulcrum IT Partners is the parent company of an expanding portfolio of established and successful IT solution companies around the world with proven expertise in cyber security…” Source: RevenueBase Database · checked Sep 21, 2026
23	Optimus Tech Solutions INC	Strong evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	18 contacts →
	Strong evidence “Optimus Tech Solutions is a Toronto-based Managed IT and Cybersecurity Services provider helping organizations operate securely, efficiently, and with confidence.” Source: RevenueBase Database · checked Sep 21, 2026
24	Mjolnir Security INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	17 contacts →
	Indirect evidence “Mjolnir provides clients with a suite of highly advanced and AI/ML driven tools and services - Security Ops Center as a Service, Threat Detection and Dark web Threat Intelligence…” Source: RevenueBase Database · checked Sep 21, 2026
25	Connectability IT Support	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	17 contacts →
	Indirect evidence “Connectability has been a trusted partner for businesses in Toronto & GTA for over 30 years, providing expert managed IT services that keep your technology running smoothly and…” 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: cybersecurity businesses. 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 cybersecurity businesses.
Partial evidence: Its own public description names part of cybersecurity businesses, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity businesses. 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 306 cybersecurity businesses based in Toronto, Canada

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Cybersecurity businesses based in Toronto, Canada at a glance

As of Sep 21, 2026

33.8%Verified-email coverage

7.0Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Toronto

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

175

11-50

104

51-200

201-500

501-1,000

Email recency for this list is measured across the whole Canada list rather than for Toronto, so it is reported there. Company counts and contact totals on this page are exact for Toronto, over 306 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 cybersecurity businesses, 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 Toronto, Canada whose own description of what they do matches “cybersecurity businesses”. 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 cybersecurity businesses), 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 cybersecurity businesses, and records with no verified work email. Companies headquartered outside Toronto 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, 720 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.

Cybersecurity businesses by metro in Canada

Cybersecurity businesses in Toronto306
Cybersecurity businesses in Montreal153
Cybersecurity businesses in Calgary109
Cybersecurity businesses in Ottawa106
Cybersecurity businesses in Vancouver80
Cybersecurity businesses in Mississauga56
Cybersecurity businesses in Edmonton40
Cybersecurity businesses in Quebec27

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 cybersecurity businesses, 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 cybersecurity businesses are there based in Toronto, Canada?

RevenueBase identified 306 cybersecurity businesses headquartered in Toronto, 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?

Trillium Information Security Systems, headquartered in Toronto, tops this list with the largest team on record.

Which city has the most cybersecurity businesses?

Toronto leads with 306 headquartered companies, followed by Montreal (153) and Calgary (109).

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 720 verified decision-maker contacts tracked across these 306 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.