Company lists · Data verified August 2026

Top 25 Cybersecurity incident response firms based in Canada

Name: Cybersecurity incident response firms based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 379 companies tracked

There are 379 cybersecurity incident response firms headquartered in Canada (RevenueBase, August 2026). RevenueBase tracks 8,251 professional contacts across them, including 4,462 with verified work emails and 1,945 with mobile numbers. Toronto is the largest hub.

This list covers cybersecurity incident response firms 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.

379Companies

8,251Contacts tracked

4,462Verified emails

1,945Mobile numbers

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The 25 largest cybersecurity incident response firms based in Canada

Ranked by team size

Top 25 of 379 cybersecurity incident response firms 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	Arctic Wolf	Waterloo, ON	1,001-5,000	3,200	1,896
2	Cyderes	Calgary, AB	1,001-5,000	842	485
3	Bluevoyant	Toronto	501-1,000	678	502
4	Esentire	Waterloo, ON	501-1,000	630	433
5	Safeaeon INC	Charlottetown, PE	51-200	188	27
6	Cypfer	Toronto, ON	51-200	178	107
7	Gosecure	Montreal, QC	51-200	172	88
8	Field Effect	Ottawa, ON	51-200	149	116
9	Neverhack France	Montreal, QC	1,001-5,000	102	35
10	ISA Cybersecurity	Calgary, AB	51-200	83	43
11	Plurilock	Victoria, BC	51-200	63	34
12	ION	Calgary, AB	51-200	56	43
13	Ebryx LLC	Montreal, QC	201-500	47	26
14	Streamscan Cybersecurity	Montreal, QC	11-50	44	1
15	Control GAP	Mississauga, ON	11-50	42	31
16	Atredis Partners	n/a	11-50	32	28
17	Elastify	Halifax	11-50	32	20
18	Lyrical Security	Markham, ON	11-50	24	17
19	Armour Cybersecurity	Toronto, ON	11-50	20	13
20	Rsolutions Corporation	Regina, SK	51-200	17	10
21	Threat IQ	Toronto	11-50	16	10
22	Mjolnir Security INC	Toronto, ON	11-50	15	11
23	Iron Spear Information Security LTD	Calgary, AB	11-50	14	11
24	Sabytel Technologies, INC	Ottawa, ON	11-50	14	8
25	Choicecom Networks & Communications LTD	Kingston, ON	11-50	14	6

Showing 25 of 379 cybersecurity incident response firms based in Canada

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Cybersecurity incident response firms based in Canada at a glance

As of Aug 28, 2026

1-10Median size (employees)

TorontoLargest hub · 90 HQs

1,945Contacts with mobile numbers

8Emails re-verified in last 30 days

Companies by employee count

1-10

232

11-50

109

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity incident response firms by metro

Metro	Companies
Cybersecurity incident response firms in Toronto	90
Cybersecurity incident response firms in Montreal	47
Cybersecurity incident response firms in Calgary	35
Cybersecurity incident response firms in Ottawa	29
Cybersecurity incident response firms in Vancouver	24
Cybersecurity incident response firms in Mississauga	14
Cybersecurity incident response firms in Quebec	12
Cybersecurity incident response firms in Edmonton	7

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 incident response firms”, 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; 8 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 incident response firms are there based in Canada?

There are 379 cybersecurity incident response firms headquartered in Canada as of August 2026 (RevenueBase).

What is the largest company on this list?

Arctic Wolf, headquartered in Waterloo, tops this list with the largest team on record.

Which city has the most cybersecurity incident response firms?

Toronto leads with 90 headquartered companies, followed by Montreal (47) and Calgary (35).

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 4,462 verified decision-maker contacts tracked across these 379 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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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.