Company lists · Data refreshed September 2026

Top 25 Cybersecurity services companies based in Toronto, Canada

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

Compiled by the RevenueBase Data Team Data refreshed Sep 10, 2026 188 companies tracked

RevenueBase identified 188 cybersecurity services companies headquartered in Toronto, Canada as of September 2026 and tracks 1,305 professional contacts across them, including 484 with verified work emails and 98 with mobile numbers. Toronto is the largest hub.

This list covers cybersecurity services companies 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 10, 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 10, 2026 86% judged on-target in blind review

188Companies

1,305Contacts tracked

484Verified emails

98Mobile numbers

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The 25 largest cybersecurity services companies based in Toronto, Canada

Ranked by team size

Top 25 of 188 cybersecurity services companies based in Toronto, Canada, ranked by team size, largest first. Data refreshed Sep 10, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity services 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	Trillium Information Security Systems	Strong evidence	Toronto, ON, CanadaHQ checked Sep 10, 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 10, 2026
2	ISA Cybersecurity	Strong evidence	Toronto, ON, CanadaHQ checked Sep 10, 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 10, 2026
3	Cybersecurity Umbrella	Strong evidence	Toronto, ON, CanadaHQ checked Sep 10, 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 10, 2026
4	Cruciallogics	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 10, 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 10, 2026
5	Cyderes	Strong evidence	Toronto, ON, CanadaHQ checked Sep 10, 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 10, 2026
6	Iamconcepts	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 10, 2026	51-200	36 contacts →
	Indirect evidence “A Proudly Canadian Company!” Source: RevenueBase Database · checked Sep 10, 2026
7	Elastify	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 10, 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 10, 2026
8	Hudson Technology	Strong evidence	Toronto, ON, CanadaHQ checked Sep 10, 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 10, 2026
9	Fusion Computing Limited	Strong evidence	Toronto, ON, CanadaHQ checked Sep 10, 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 10, 2026
10	Armour Cybersecurity	Strong evidence	Toronto, ON, CanadaHQ checked Sep 10, 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 10, 2026
11	Intercast	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 10, 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 10, 2026
12	Fulcrum IT Partners	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 10, 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 10, 2026
13	Optimus Tech Solutions INC	Strong evidence	Toronto, ON, CanadaHQ checked Sep 10, 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 10, 2026
14	Mjolnir Security INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 10, 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 10, 2026
15	Connectability IT Support	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 10, 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 10, 2026
16	System Architects INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 10, 2026	11-50	17 contacts →
	Indirect evidence “System Architects is a leading IT company based in Toronto, serving clients across Canada.” Source: RevenueBase Database · checked Sep 10, 2026
17	Heighten Security	Strong evidence	Toronto, CanadaHQ checked Sep 10, 2026	1-10	16 contacts →
	Strong evidence “Heighten Security is a leading provider of cybersecurity services for organizations across Canada.” Source: RevenueBase Database · checked Sep 10, 2026
18	Cyberwall	Strong evidence	Toronto, ON, CanadaHQ checked Sep 10, 2026	11-50	16 contacts →
	Strong evidence “Cyberwall is one of the best cybersecurity services and training provider in Toronto.” Source: RevenueBase Database · checked Sep 10, 2026
19	Complysec360 By Engaiz	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 10, 2026	11-50	15 contacts →
	Indirect evidence “With digital transformation on the rise, global cybercrime damages are predicted to hit $10.5 Trillion by 2025.” Source: RevenueBase Database · checked Sep 10, 2026
20	Group 4 Networks	Strong evidence	Toronto, ON, CanadaHQ checked Sep 10, 2026	1-10	11 contacts →
	Strong evidence “Group 4 Networks is Toronto's trusted managed IT services and cybersecurity partner for small and mid-sized businesses.” Source: RevenueBase Database · checked Sep 10, 2026
21	Wolff Adar IT Solutions	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 10, 2026	1-10	10 contacts →
	Indirect evidence “At Wolff Adar IT Solutions, we understand that your IT needs are unique.” Source: RevenueBase Database · checked Sep 10, 2026
22	IRM Consulting & Advisory	Strong evidence	Toronto, ON, CanadaHQ checked Sep 10, 2026	1-10	10 contacts →
	Strong evidence “Imagine scaling your business without Cybersecurity and AI Governance roadblocks.” Source: RevenueBase Database · checked Sep 10, 2026
23	Wiconnect Corp	Strong evidence	Toronto, ON, CanadaHQ checked Sep 10, 2026	11-50	9 contacts →
	Strong evidence “WiConnect is a Canadian boutique Managed IT Services and Cybersecurity provider specializing in small to medium sized businesses across Canada.” Source: RevenueBase Database · checked Sep 10, 2026
24	Kirsch Group	Indirect evidence	Toronto, CanadaHQ checked Sep 10, 2026	1-10	9 contacts →
	Indirect evidence “We protect what’s important to you.” Source: RevenueBase Database · checked Sep 10, 2026
25	Shield Identity	Strong evidence	Toronto, ON, CanadaHQ checked Sep 10, 2026	11-50	9 contacts →
	Strong evidence “Shield Identity is a Brampton-based Cybersecurity, MSP, MSSP, and ERP company supporting small to medium-sized businesses across Brampton, Toronto, and the GTA.” Source: RevenueBase Database · checked Sep 10, 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 services 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 cybersecurity services companies.
Partial evidence: Its own public description names part of cybersecurity services companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity services 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 188 cybersecurity services companies based in Toronto, Canada

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Cybersecurity services companies based in Toronto, Canada at a glance

As of Sep 10, 2026

37.1%Verified-email coverage

7.5%Mobile-number coverage

6.9Average contacts per company

1-10Median size (employees)

110.1%Largest-city concentration · Toronto

Sep 10, 2026Page data refreshed

Companies by employee count

1-10

108

11-50

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 13.0d

4540–30

2931–60

061–90

090–180

1180+

Company record updated

Median 56.0d

00–30

69731–60

39161–90

11890–180

99180+

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 services 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 Toronto, Canada whose own description of what they do matches “cybersecurity services 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 cybersecurity services 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 cybersecurity services companies, 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, 484 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 10, 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 services companies by metro in Canada

Cybersecurity services companies in Toronto207
Cybersecurity services companies in Montreal101
Cybersecurity services companies in Calgary79
Cybersecurity services companies in Ottawa74
Cybersecurity services companies in Vancouver51
Cybersecurity services companies in Mississauga29

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 services 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 cybersecurity services companies are there based in Toronto, Canada?

RevenueBase identified 188 cybersecurity services companies 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 services companies?

Toronto leads with 207 headquartered companies, followed by Montreal (101) and Calgary (79).

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 484 verified decision-maker contacts tracked across these 188 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 10, 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.