Company lists · Data refreshed August 2026
Top 13 Computer security companies based in Czechia
RevenueBase identified 28 computer security companies headquartered in Czechia as of August 2026 and tracks 871 professional contacts across them, including 393 with verified work emails and 40 with mobile numbers. Prague is the largest hub.
This list covers computer security companies headquartered in Czechia, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed August 31, 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.
The 13 largest computer security companies based in Czechia
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 627 contacts → | ||||
Indirect evidence “Avast is a leader in Cyber Safety and part of Gen™ (NASDAQ: GEN), a global company dedicated to powering Digital Freedom with a family of trusted consumer brands.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 2 | 102 contacts → | ||||
Indirect evidence “ESET software spol.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 3 | 13 contacts → | ||||
Indirect evidence “Naše motto: For safety reasons V roce 2005 jsme si při založení FreeDivision dali za cíl přinášet na český trh nejkvalitnější bezpečnostní hardwarové a softwarové nástroje.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 4 | 13 contacts → | ||||
Partial evidence “We are an information security company.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 5 | 5 contacts → | ||||
Partial evidence “We believe that true cyber security means having the best insight.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 6 | 4 contacts → | ||||
Indirect evidence “We are a company with a clear goal.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 7 | 4 contacts → | ||||
Partial evidence “SODAT was founded in 1997 to offer innovative security technologies with an emphasis on quality and quick implementation.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 8 | 3 contacts → | ||||
Indirect evidence “Your business never stops.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 9 | 2 contacts → | ||||
Indirect evidence “Jsme přední experti na kybernetickou bezpečnost a výhradní distributor technologií CA a Symantec od společnosti Broadcom Inc.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2 contacts → | ||||
Indirect evidence “Malé a střední firmy u nás stále podceňují hrozby, které představují dnešní kybernetické útoky.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1 contacts → | ||||
Indirect evidence “We are an international team of more than 100 cybersecurity experts and we are still growing.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1 contacts → | ||||
Partial evidence “We provide solutions, we make connections, we create growth CYBERYG provides professional & completely personalized cyber security solutions to support organizations’ defense…” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1 contacts → | ||||
Indirect evidence “Jsme česká společnost specializující se na podporu a nasazení produktů společnosti Microsoft a síťových prvků UniFi v oblasti kybernetické bezpečnosti.” Source: RevenueBase Database · checked Aug 31, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: computer security companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names computer security companies.
- Partial evidence
- Its own public description names part of computer security companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name computer security companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 13 of 28 computer security companies based in Czechia
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Computer security companies based in Czechia at a glance
As of Aug 31, 2026Companies by employee count
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 computer security companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Czechia whose own description of what they do matches “computer security companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names computer security companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among computer security companies, and records with no verified work email. Companies headquartered outside Czechia 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 its RevenueBase Smart Search 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, 393 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 August 31, 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.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names computer security companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many computer security companies are there based in Czechia?
RevenueBase identified 28 computer security companies headquartered in Czechia as of August 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?
AVAST, headquartered in Czechia, tops this list with the largest team on record.
Which city has the most computer security companies?
Prague leads with 8 headquartered companies, followed by Praha (6) and Brno (2).
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 393 verified decision-maker contacts tracked across these 28 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 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.
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