Company lists · Data verified August 2026

Top 25 Cybersecurity defense contractors based in Canada

Name: Cybersecurity defense contractors based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 617 companies tracked

There are 617 cybersecurity defense contractors headquartered in Canada (RevenueBase, August 2026). RevenueBase tracks 24,989 professional contacts across them, including 13,558 with verified work emails and 5,001 with mobile numbers. Toronto is the largest hub.

This list covers cybersecurity defense contractors headquartered in Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

617Companies

24,989Contacts tracked

13,558Verified emails

5,001Mobile numbers

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The 25 largest cybersecurity defense contractors based in Canada

Ranked by team size

Top 25 of 617 cybersecurity defense contractors based in Canada, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Fortinet	Ottawa, ON	10001+	14,326	8,520
2	Arctic Wolf	Waterloo, ON	1,001-5,000	3,200	1,896
3	Cyderes	Calgary, AB	1,001-5,000	842	485
4	Bluevoyant	Toronto	501-1,000	678	502
5	Adga Group	Kingston, ON	201-500	325	132
6	Commissionaires BC	Vancouver, BC	1,001-5,000	301	16
7	Bulletproof, A GLI Company	Fredericton, NB	201-500	249	186
8	ESI Technologies	Toronto, ON	201-500	191	109
9	Safeaeon INC	Charlottetown, PE	51-200	188	27
10	Convergence Networks	Winnipeg, MB	201-500	183	118
11	Cypfer	Toronto, ON	51-200	178	107
12	Victrix	Montreal, QC	201-500	177	125
13	MS Solutions	Montreal, QC	51-200	157	55
14	Iema Research & Development Pvt. Ltd. - Iemlabs	Burnaby, BC	51-200	140	43
15	Neverhack France	Montreal, QC	1,001-5,000	102	35
16	SRG Security Resource Group INC	Saskatoon, SK	501-1,000	90	29
17	ISA Cybersecurity	Calgary, AB	51-200	83	43
18	Link11 Gmbh	Vancouver, BC	51-200	68	47
19	Plurilock	Victoria, BC	51-200	63	34
20	ION	Calgary, AB	51-200	56	43
21	Ebryx LLC	Montreal, QC	201-500	47	26
22	ECS Canada	Chicoutimi, QC	201-500	47	11
23	Dnsnetworks Technology Company	Ottawa, ON	51-200	37	9
24	INPRO	Edmonton	51-200	30	2
25	BAE Systems Canada	Ottawa, ON	1,001-5,000	26	7

Showing 25 of 617 cybersecurity defense contractors based in Canada

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Cybersecurity defense contractors based in Canada at a glance

As of Aug 28, 2026

1-10Median size (employees)

TorontoLargest hub · 139 HQs

5,001Contacts with mobile numbers

11Emails re-verified in last 30 days

Companies by employee count

1-10

369

11-50

182

51-200

201-500

501-1,000

1,001-5,000

10001+

Cybersecurity defense contractors by metro

Metro	Companies
Cybersecurity defense contractors in Toronto	139
Cybersecurity defense contractors in Montreal	77
Cybersecurity defense contractors in Ottawa	54
Cybersecurity defense contractors in Calgary	52
Cybersecurity defense contractors in Vancouver	35
Cybersecurity defense contractors in Mississauga	18
Cybersecurity defense contractors in Edmonton	17
Cybersecurity defense contractors in Quebec	16

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “cybersecurity defense contractors”, with match quality audited by blind human judging, and headquartered in Canada.
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: Contact records re-verify on a rolling cadence; 11 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many cybersecurity defense contractors are there based in Canada?

There are 617 cybersecurity defense contractors headquartered in Canada as of August 2026 (RevenueBase).

What is the largest company on this list?

Fortinet, headquartered in Ottawa, tops this list with the largest team on record.

Which city has the most cybersecurity defense contractors?

Toronto leads with 139 headquartered companies, followed by Montreal (77) and Ottawa (54).

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 13,558 verified decision-maker contacts tracked across these 617 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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Related lists

Cybersecurity defense contractors by geography

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.