Company lists · Data refreshed September 2026

Top 25 Network security consulting firms based in Toronto, Canada

Name: Network security consulting firms based in Toronto, Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 156 companies tracked

RevenueBase identified 156 network security consulting firms headquartered in Toronto, Canada as of September 2026 and tracks 992 professional contacts across them, including 368 with verified work emails. Toronto is the largest hub.

This list covers network security consulting firms 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, 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

156Companies

992Contacts tracked

368Verified emails

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The 25 largest network security consulting firms based in Toronto, Canada

Ranked by team size

Top 25 of 156 network security consulting firms based in Toronto, Canada, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names network security consulting firms: 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	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
2	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
3	CruciallogicsIndirect 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
4	Reliance North AmericaIndirect evidence	Toronto, CanadaHQ checked Sep 5, 2026	51-200	43
	“As our name suggests, our customers rely on us in providing suitable technology inputs to support their business goals.” Source: company website · checked Sep 5, 2026
5	CyderesPartial evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	501-1,000	37
	“Cyderes is a global cybersecurity powerhouse offering comprehensive solutions around managed security, identity and access management, and professional services.” Source: company website · checked Sep 5, 2026
6	IamconceptsIndirect evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	51-200	36
	“A Proudly Canadian Company!” Source: company website · checked Sep 5, 2026
7	ElastifyPartial evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	11-50	34
	“As your business grows, keeping up with compliance requirements and strengthening your security posture can be a real challenge.” Source: company website · checked Sep 5, 2026
8	SUN IT SolutionsPartial evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	11-50	23
	“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: company website · checked Sep 5, 2026
9	Armour CybersecurityIndirect evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	11-50	20
	“Armour Cybersecurity protects organizations from the multi-faceted, ever-evolving cyber threats that put businesses at risk every day.” Source: company website · checked Sep 5, 2026
10	IntercastIndirect evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	11-50	20
	“Intercast's mission is to be a strategic resource to our clients in Risk Reduction.” Source: company website · checked Sep 5, 2026
11	Heighten SecurityPartial evidence	Toronto, CanadaHQ checked Sep 5, 2026	1-10	16
	“Heighten Security is a leading provider of cybersecurity services for organizations across Canada.” Source: company website · checked Sep 5, 2026
12	CyberwallIndirect evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	11-50	16
	“Cyberwall is one of the best cybersecurity services and training provider in Toronto.” Source: company website · checked Sep 5, 2026
13	Kirsch GroupIndirect evidence	Toronto, CanadaHQ checked Sep 5, 2026	1-10	9
	“We protect what’s important to you.” Source: company website · checked Sep 5, 2026
14	SourcetekitPartial evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	11-50	8
	“SourcetekIT is focused on providing high-quality Professional and Managed Security Services to businesses across North America.” Source: company website · checked Sep 5, 2026
15	Ardent SecurityPartial evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	1-10	8
	“At Ardent Security, we've built our reputation on a simple principle: Exceptional credentials deliver exceptional results.” Source: company website · checked Sep 5, 2026
16	AWC ConsultingIndirect evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	1-10	8
	“Free yourself with effective, intelligent technology solutions customized to your needs.” Source: company website · checked Sep 5, 2026
17	GV Group For Your SecurityStrong evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	1-10	8
	“Since 2015, GV Group has been delivering security consulting and risk management services across Canada and the United States.” Source: company website · checked Sep 5, 2026
18	AdvisorsdenIndirect evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	11-50	6
	“Your Partner in Cybersecurity Excellence At Advisorsden, we understand that the digital landscape is evolving rapidly, and with it, the complexity and sophistication of…” Source: company website · checked Sep 5, 2026
19	TasproviderStrong evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	1-10	6
	“Our consulting team specializes in the design, implementation, security, and support of all infrastructure, cloud, and networking systems.” Source: company website · checked Sep 5, 2026
20	CyberstewardIndirect evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	11-50	6
	“CyberSteward™ is a global, market-leading Cybersecurity Advisory firm, headquartered in Toronto, Ontario, Canada, with technical expertise in cybersecurity breaches and…” Source: company website · checked Sep 5, 2026
21	Velnet ConsultingIndirect evidence	Toronto, CanadaHQ checked Sep 5, 2026	11-50	5
	“Empowering organizations to navigate modern cybersecurity challenges with confidence.” Source: company website · checked Sep 5, 2026
22	Mand Consulting GroupPartial evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	11-50	5
	“Mand Consulting Group (MCG) is a respected ISO27001-certified cybersecurity services firm, acclaimed for providing enterprise-quality services at rates accessible for startups and…” Source: company website · checked Sep 5, 2026
23	Perdition SecurityPartial evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	1-10	4
	“At Perdition Security, we specialize in crafting bespoke cybersecurity solutions for a diverse clientele, with a particular emphasis on supporting non-profit organizations.” Source: company website · checked Sep 5, 2026
24	A.S. ConsultingIndirect evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	1-10	4
	“A.S.” Source: company website · checked Sep 5, 2026
25	CytelligencePartial evidence	Toronto, ON, CanadaHQ checked Sep 5, 2026	11-50	4
	“Cytelligence is driven by our passion for providing our customers leadership and effective solutions to solve security-related concerns and creating empowering goals that support…” Source: company website · checked Sep 5, 2026

Showing 25 of 156 network security consulting firms based in Toronto, Canada

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Network security consulting firms based in Toronto, Canada at a glance

As of Sep 5, 2026

1-10Median size (employees)

TorontoLargest hub · 156 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole Canada list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Toronto, over 156 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 network security consulting firms, 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 Toronto, Canada whose own description of what they do matches “network security consulting firms”. 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 network security consulting firms, 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 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, 368 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.

Network security consulting firms by metro in Canada

Network security consulting firms in Toronto156
Network security consulting firms in Montreal72
Network security consulting firms in Ottawa64
Network security consulting firms in Calgary57
Network security consulting firms in Vancouver46
Network security consulting firms in Mississauga28

Frequently asked

How many network security consulting firms are there based in Toronto, Canada?

RevenueBase identified 156 network security consulting firms 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 network security consulting firms?

Toronto leads with 156 headquartered companies, followed by Montreal (72) and Ottawa (64).

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 368 verified decision-maker contacts tracked across these 156 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.