Company lists · Data refreshed September 2026

Top 14 Managed security services companies based in Mississauga, Canada

Name: Managed security services companies based in Mississauga, Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 35 companies tracked

RevenueBase identified 35 managed security services companies headquartered in Mississauga, Canada as of September 2026 and tracks 559 professional contacts across them, including 82 with verified work emails. Toronto is the largest hub.

This list covers managed security services companies headquartered in Mississauga, 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

35Companies

559Contacts tracked

82Verified emails

Unlock all 35 companies Free signup · no credit card · 500 free credits

The 14 largest managed security services companies based in Mississauga, Canada

Ranked by team size

Top 14 of 35 managed security services companies based in Mississauga, Canada, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names managed security services companies: 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	Access 2 Networks A2nStrong evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	11-50	46
	“Access 2 Networks is Canada’s premier network security provider, dedicated to helping organizations manage and protect their networks against internal and external security…” Source: company website · checked Sep 5, 2026
2	Canary TrapPartial evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	11-50	21
	“Canary Trap is a North American offensive security firm that helps organizations validate their security before attackers do.” Source: company website · checked Sep 5, 2026
3	Oppos INCStrong evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	1-10	18
	“Business IT services provider specializing in security and managed services” Source: company website · checked Sep 5, 2026
4	MGL Protection ServicesPartial evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	11-50	14
	“MGL Protection Services is a Canadian security company; it was founded in 2016 and boasts a powerhouse senior staff with over twenty years experience in the industry.” Source: company website · checked Sep 5, 2026
5	StratejmStrong evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	51-200	12
	“Stratejm is a next-generation managed security services provider, driving superior cybersecurity outcomes through our innovative "Security-as-a-Service" model.” Source: company website · checked Sep 5, 2026
6	OwleyeStrong evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	51-200	10
	“OwlEye™ provides expert Managed WordPress Security as a Service, ensuring robust security, continuous functionality, and proactive maintenance for your website.” Source: company website · checked Sep 5, 2026
7	Binarium CorpStrong evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	11-50	9
	“Binarium is a Managed Service Provider (MSP) delivering enterprise-grade IT solutions to businesses that want reliability, security, and performance, without the cost of building…” Source: company website · checked Sep 5, 2026
8	Infoskill Intelligent Solutions INCStrong evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	11-50	6
	“Founded in 1988, Infoskill is a Toronto based boutique managed security and technology services company.” Source: company website · checked Sep 5, 2026
9	Mayfield Technology GroupStrong evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	11-50	5
	“Mayfield is a managed security service provider offering businesses the ability to leverage subject matter security experts and active monitoring of security events.” Source: company website · checked Sep 5, 2026
10	Complytec INCPartial evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	11-50	4
	“ComplyTec is a trusted reseller of IT security solutions, helping organizations detect and prevent threats to their IT systems and data.” Source: company website · checked Sep 5, 2026
11	Vista Security & InvestigationsPartial evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	501-1,000	3
	“Vista Security & Investigations is a full-service security company that offers integrated security solutions ranging from security guard services, alarms, mobile services, CCTV…” Source: company website · checked Sep 5, 2026
12	Cisphere, INCIndirect evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	1-10	2
	Source: company website · checked Sep 5, 2026
13	SocvaultPartial evidence	Mississauga, ON, CanadaHQ checked Sep 5, 2026	11-50	2
	“The prevailing business market is in dire need of cybersecurity providers, security providers who provide much more than an antivirus program.” Source: company website · checked Sep 5, 2026
14	BrigientIndirect evidence	Mississauga, CanadaHQ checked Sep 5, 2026	11-50	1
	“Identify - Respond - Recover” Source: company website · checked Sep 5, 2026

Showing 14 of 35 managed security services companies based in Mississauga, Canada

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 82 reachable decision-makers.

Free signup · no credit card

See all 35 companies

Managed security services companies based in Mississauga, Canada at a glance

As of Sep 5, 2026

11-50Median size (employees)

TorontoLargest hub · 122 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 Mississauga, over 35 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 managed security services companies, 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 Mississauga, Canada whose own description of what they do matches “managed security services companies”. 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 managed security services companies, and records with no verified work email. Companies headquartered outside Mississauga 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, 82 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.

Managed security services companies by metro in Canada

Managed security services companies in Toronto122
Managed security services companies in Montreal50
Managed security services companies in Calgary45
Managed security services companies in Ottawa36
Managed security services companies in Mississauga35
Managed security services companies in Vancouver27

Frequently asked

How many managed security services companies are there based in Mississauga, Canada?

RevenueBase identified 35 managed security services companies headquartered in Mississauga, 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?

Access 2 Networks A2n, headquartered in Mississauga, tops this list with the largest team on record.

Which city has the most managed security services companies?

Toronto leads with 122 headquartered companies, followed by Montreal (50) and Calgary (45).

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 82 verified decision-maker contacts tracked across these 35 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.

Ready to reach these companies? Verified emails and direct dials for all 35 managed security services companies based in Mississauga, Canada. Start with a free account, no credit card.

Get the full list

Related lists

Managed security services companies by geography

Browse the directory

Browse: Companies home · Managed security services companies in Canada · All Canada lists · All Managed security services companies lists · New lists

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.