Company lists · Data refreshed September 2026

Top 25 Security auditing firms based in Toronto, Canada

Name: Security auditing firms based in Toronto, Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 113 companies tracked

RevenueBase identified 113 security auditing firms headquartered in Toronto, Canada as of September 2026 and tracks 573 professional contacts across them, including 229 with verified work emails. Toronto is the largest hub.

This list covers security auditing 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 6, 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 6, 2026 86% judged on-target in blind review

113Companies

573Contacts tracked

229Verified emails

Explore all 113 companies → Free signup · no credit card · 500 free credits

The 25 largest security auditing firms based in Toronto, Canada

Ranked by team size

Top 25 of 113 security auditing firms based in Toronto, Canada, ranked by team size, largest first. Data refreshed Sep 6, 2026. Evidence rates how directly each company's own description names security auditing 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	ISA CybersecurityIndirect evidence	Toronto, ON, CanadaHQ checked Sep 6, 2026	51-200	86
	“ISA Cybersecurity is one of Canada’s leading cybersecurity services and solutions providers.” Source: company website · checked Sep 6, 2026
2	PacketlabsPartial evidence	Toronto, ON, CanadaHQ checked Sep 6, 2026	51-200	64
	“Packetlabs is CREST-accredited and SOC 2 Type II attested, demonstrating our commitment to security excellence.” Source: company website · checked Sep 6, 2026
3	CyderesPartial evidence	Toronto, ON, CanadaHQ checked Sep 6, 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 6, 2026
4	ElastifyPartial evidence	Toronto, ON, CanadaHQ checked Sep 6, 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 6, 2026
5	Armour CybersecurityIndirect evidence	Toronto, ON, CanadaHQ checked Sep 6, 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 6, 2026
6	IntercastIndirect evidence	Toronto, ON, CanadaHQ checked Sep 6, 2026	11-50	20
	“Intercast's mission is to be a strategic resource to our clients in Risk Reduction.” Source: company website · checked Sep 6, 2026
7	Heighten SecurityPartial evidence	Toronto, CanadaHQ checked Sep 6, 2026	1-10	16
	“Heighten Security is a leading provider of cybersecurity services for organizations across Canada.” Source: company website · checked Sep 6, 2026
8	Complysec360 By EngaizIndirect evidence	Toronto, ON, CanadaHQ checked Sep 6, 2026	11-50	15
	“With digital transformation on the rise, global cybercrime damages are predicted to hit $10.5 Trillion by 2025.” Source: company website · checked Sep 6, 2026
9	Fernhill Associates INCPartial evidence	Toronto, ON, CanadaHQ checked Sep 6, 2026	11-50	10
	“A fast growing Toronto-based advisory firm, Fernhill Associates specializes in business operations, technology and cyber security.” Source: company website · checked Sep 6, 2026
10	IRM Consulting & AdvisoryIndirect evidence	Toronto, ON, CanadaHQ checked Sep 6, 2026	1-10	10
	“Imagine scaling your business without Cybersecurity and AI Governance roadblocks.” Source: company website · checked Sep 6, 2026
11	Kirsch GroupIndirect evidence	Toronto, CanadaHQ checked Sep 6, 2026	1-10	9
	“We protect what’s important to you.” Source: company website · checked Sep 6, 2026
12	Ardent SecurityPartial evidence	Toronto, ON, CanadaHQ checked Sep 6, 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 6, 2026
13	StingraiIndirect evidence	Toronto, ON, CanadaHQ checked Sep 6, 2026	1-10	7
	“Stingrai is CREST-accredited for penetration testing services, helps companies prevent breaches by simulating real-world attacks.” Source: company website · checked Sep 6, 2026
14	AdvisorsdenIndirect evidence	Toronto, ON, CanadaHQ checked Sep 6, 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 6, 2026
15	CyberstewardIndirect evidence	Toronto, ON, CanadaHQ checked Sep 6, 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 6, 2026
16	Velnet ConsultingIndirect evidence	Toronto, CanadaHQ checked Sep 6, 2026	11-50	5
	“Empowering organizations to navigate modern cybersecurity challenges with confidence.” Source: company website · checked Sep 6, 2026
17	Mand Consulting GroupIndirect evidence	Toronto, ON, CanadaHQ checked Sep 6, 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 6, 2026
18	Zartek Global Cybersecurity & SAP SolutionsIndirect evidence	Toronto, ON, CanadaHQ checked Sep 6, 2026	11-50	5
	“ZARTEK Global Network is a unique platform providing Cybersecurity & ERP/SAP solutions.” Source: company website · checked Sep 6, 2026
19	Perdition SecurityPartial evidence	Toronto, ON, CanadaHQ checked Sep 6, 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 6, 2026
20	Assurance Protection Group Inc. ApgiPartial evidence	Toronto, ON, CanadaHQ checked Sep 6, 2026	1-10	4
	“Assurance Protection Group is made up of a team of professionals from diverse backgrounds that has a fresh, innovative and realistic approach to Security.” Source: company website · checked Sep 6, 2026
21	Security Compass AdvisoryPartial evidence	Toronto, ON, CanadaHQ checked Sep 6, 2026	51-200	3
	“Security Compass Advisory provides critical consulting and advisory services to Fortune 500 companies worldwide, from enterprise penetration testing to cloud security, third-party…” Source: company website · checked Sep 6, 2026
22	Allo TechnologiesPartial evidence	Toronto, ON, CanadaHQ checked Sep 6, 2026	11-50	3
	“We specialize in information security program design, implementation, and managed cybersecurity services.” Source: company website · checked Sep 6, 2026
23	Kernel AdvisoryIndirect evidence	Toronto, CanadaHQ checked Sep 6, 2026	11-50	3
	“Kernel is trusted by companies and investors around the world with complex cybersecurity needs.” Source: company website · checked Sep 6, 2026
24	BitsproofPartial evidence	Toronto, ON, CanadaHQ checked Sep 6, 2026	11-50	3
	“We are a cybersecurity company that provides solutions and services to help organizations improve their security posture.” Source: company website · checked Sep 6, 2026
25	Malto CyberIndirect evidence	Toronto, ON, CanadaHQ checked Sep 6, 2026	1-10	3
	“MALTO Cyber is a cybersecurity company dedicated to helping organizations protect their critical information and information systems from evolving cyber threats.” Source: company website · checked Sep 6, 2026

Showing 25 of 113 security auditing firms based in Toronto, Canada

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Security auditing firms based in Toronto, Canada at a glance

As of Sep 6, 2026

1-10Median size (employees)

TorontoLargest hub · 113 HQs

Contacts with mobile numbers

Sep 6, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

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 113 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 security auditing 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 “security auditing 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 security auditing 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, 229 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 6, 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.

Security auditing firms by metro in Canada

Frequently asked

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

RevenueBase identified 113 security auditing 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?

ISA Cybersecurity, headquartered in Toronto, tops this list with the largest team on record.

Which city has the most security auditing firms?

Toronto leads with 113 headquartered companies, followed by Montreal (47) and Ottawa (38).

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 229 verified decision-maker contacts tracked across these 113 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 6, 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.