Lookalikes · Data refreshed October 2026

25 ISA Cybersecurity lookalikes

Compiled by the RevenueBase Data Team Data refreshed Oct 18, 2026 2318 matching companies

Looking for ISA Cybersecurity lookalikes, ISA Cybersecurity competitors or ISA Cybersecurity alternatives? The RevenueBase company graph holds 2318 companies that do what ISA Cybersecurity does, matched at 85%+ measured description similarity (RevenueBase, October 2026). The 25 largest are ranked below by team size; across all 2318 matches RevenueBase tracks 56,010 professional contacts, including 20,215 with verified work emails.

Similarity is measured on what companies actually do, from their business descriptions rather than industry codes, and is shown per row as a percentage. This page keeps only companies at 85%+ measured similarity to ISA Cybersecurity and ranks them by company size. Data current as of October 18, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 Similarity shown on every row Refreshed Oct 18, 2026 Match quality audited by blind human judging

Reference company

ISA Cybersecurity

“ISA Cybersecurity is one of Canada’s leading cybersecurity services and solutions providers.”

51-200Employees

88Contacts tracked

45Verified emails

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The 25 largest ISA Cybersecurity competitors and alternatives

Ranked by team size

Top 25 of 2318 companies matching ISA Cybersecurity at 85%+ description similarity, ranked by team size. Similarity is each company's measured match to ISA Cybersecurity (100% = identical). Data refreshed Oct 18, 2026.
#	Company	HQ	Employees	Similarity	Verified emails
1	Sophos	Abingdon, GB	5,001-10,000	88%	2,743 contacts →
2	OPTIV	Leawood, US	1,001-5,000	86%	1,342 contacts →
3	Inspira Enterprise	Nairobi, KE	1,001-5,000	85%	1,047 contacts →
4	Guidepoint Security	Reston, US	1,001-5,000	88%	863 contacts →
5	Ensign Infosecurity	Singapore, SG	501-1,000	85%	231 contacts →
6	Cyderes	Kansas City, US	1,001-5,000	85%	499 contacts →
7	SISA	Bengaluru, IN	201-500	86%	260 contacts →
8	Trustwave, A Levelblue Company	Chicago, US	501-1,000	86%	319 contacts →
9	I-Tracing	Courbevoie, FR	1,001-5,000	87%	399 contacts →
10	Telos Corporation	Ashburn, US	501-1,000	86%	230 contacts →
11	Network Intelligence	Plano, US	501-1,000	85%	99 contacts →
12	Ultraviolet Cyber	Mclean, US	501-1,000	87%	270 contacts →
13	Advens	Paris, FR	501-1,000	86%	315 contacts →
14	Paramount Computer Systems	AE	201-500	89%	120 contacts →
15	Protechmanize	Thane, IN	501-1,000	85%	71 contacts →
16	Aujas Cybersecurity	Cupertino, US	1,001-5,000	87%	9 contacts →
17	Safeway	Sao Paulo, BR	201-500	90%	10 contacts →
18	Acpl Systems	Gurgaon, IN	201-500	86%	196 contacts →
19	Kudelski Security	Cheseaux, CH	201-500	85%	194 contacts →
20	Neverhack	Paris, FR	1,001-5,000	86%	189 contacts →
21	SK Shieldus	KR	5,001-10,000	85%	9 contacts →
22	Esec Forte Technologies	Gurugram, IN	201-500	86%	210 contacts →
23	T Security - Dach	Bonn, DE	1,001-5,000	86%	205 contacts →
24	Truesec	Denmark Suomi, SE	201-500	89%	202 contacts →
25	Mnemonic	Oslo, NO	201-500	86%	9 contacts →

Showing the 25 largest of 2318 similar companies

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How similarity works

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Matching: Companies are matched on what they actually do, as described in their own business descriptions, never on shared industry codes. The list keeps only matches at 85%+ measured similarity to ISA Cybersecurity, and match quality is audited by blind human judging. Read the full methodology.
Ranking: Team size, largest first, among the matched companies: companies are ordered by the number of professionals RevenueBase tracks at each one. Each row also shows its measured similarity to ISA Cybersecurity as a percentage.
Verification: Contact records re-verify on a rolling cadence rather than being scraped once and left to decay; each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on October 18, 2026. Lists refresh periodically as the graph is re-checked.

Frequently asked

What are ISA Cybersecurity lookalikes?

ISA Cybersecurity lookalikes are companies that closely resemble what ISA Cybersecurity does and sells, based on each company's own business description. The table above ranks the closest matches by company size, with each company's similarity to ISA Cybersecurity shown as a percentage.

What companies are similar to ISA Cybersecurity?

The largest companies similar to ISA Cybersecurity are Sophos, OPTIV, Inspira Enterprise and Guidepoint Security. The table above shows the 25 largest of the 2318 matched companies, with each row's similarity shown as a percentage.

How is similarity measured?

Similarity scores how closely a company's business, as described in its own words, matches ISA Cybersecurity's, shown as a percentage (100% = an identical description). The list keeps companies at 85% or above and ranks them by team size.

How do I get contacts at these companies?

A free RevenueBase account lets you run this exact search and work the top matches, verified emails and direct dials included. Upgrading unlocks the 20,215 verified emails and direct dials tracked across all 2318 matched companies.

Who are ISA Cybersecurity's biggest competitors?

The largest ISA Cybersecurity competitors by measured business-description similarity are Sophos, OPTIV, Inspira Enterprise and Guidepoint Security. Every company here does what ISA Cybersecurity does at 85%+ similarity, ranked by team size.

What are the best ISA Cybersecurity alternatives?

The closest ISA Cybersecurity alternatives are the companies whose own business descriptions match ISA Cybersecurity's most closely, shown above with each one's similarity as a percentage and ranked by team size.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 18, 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 Smart Search, 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.