Company lists · Data refreshed September 2026
Top 25 Security testing companies based in Poland
RevenueBase identified 72 security testing companies headquartered in Poland as of September 2026 and tracks 532 professional contacts across them, including 159 with verified work emails and 6 with mobile numbers. Warszawa is the largest hub.
This list covers security testing companies headquartered in Poland, 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 September 6, 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 25 largest security testing companies based in Poland
Ranked by team size| # | Company | RevenueBase Smart Search | Contacts | ||
|---|---|---|---|---|---|
| 1 | Partial evidence | 77 contacts → | |||
“DeviQA has been supporting customer success stories for over 14 years, protecting and safeguarding our customers' brand and hard-fought reputation through best-in-class testing…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | Strong evidence | 48 contacts → | |||
“Securitum is a leading European cybersecurity company specializing in penetration testing and IT security audits.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | Strong evidence | 48 contacts → | |||
“Niebezpiecznik provides highly practical & personalized IT Security Trainings * Hacking Web Applications,* Network/OS penetration testing,* Mobile Security,* Windows Security,*…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | Partial evidence | 32 contacts → | |||
“4Prime IT Security is a specialized team of cybersecurity experts with over 15 years of experience.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | Indirect evidence | 25 contacts → | |||
“We ensure your applications and systems are secure.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | Indirect evidence | 20 contacts → | |||
“SISOFT supports businesses and institutions in making better decisions around cybersecurity, compliance, and business continuity, in a world where technology evolves faster than…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | Partial evidence | 20 contacts → | |||
“Founded in 2020 by an ethical hacker and a former CTO, Iterasec has grown into one of the leading penetration testing companies in Ukraine and Poland.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | Partial evidence | 18 contacts → | |||
“AFINE is a trusted advisor in cybersecurity and penetration testing, serving leading organizations since 2015.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | Partial evidence | 15 contacts → | |||
“Inseqr offers modern, innovative solutions in the field of widely understood security.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | Partial evidence | 15 contacts → | |||
“Elevate Quality with OKAY\QA: Your Global Software Testing Partner Welcome to OKAY\QA, a dynamic force in global software testing, operating through LLCs in Gdansk, Tashkent and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | Indirect evidence | 14 contacts → | |||
“Eurosoc – eksperci Red & Blue Team, którzy naprawdę czuwają nad Twoim bezpieczeństwem Zajmujemy się cyberbezpieczeństwem w praktyce.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | Indirect evidence | 13 contacts → | |||
“Efigo specializes in comprehensive cybersecurity and data protection services.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | Indirect evidence | 13 contacts → | |||
“Jesteśmy grupą specjalistów działających na rynku bezpieczeństwa informacji od wielu lat.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | Indirect evidence | 13 contacts → | |||
“Sagenso is all you need to make your company's data and IT infrastructure cybersecure.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | Indirect evidence | 11 contacts → | |||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | Indirect evidence | 10 contacts → | |||
“SprintTech to spółka dedykowana usługom cyberbezpieczeństwa, która jest częścią grupy kapitałowej Sprint S.A.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | Partial evidence | 7 contacts → | |||
“Our specialists find the weakest points in your company and will show you how to fix them step-by-step, as well as how to improve your security.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | Partial evidence | 6 contacts → | |||
“PATRONUSEC | Your Cyber Security Patronus.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | Indirect evidence | 6 contacts → | |||
“Specjaliści IT z doświadczeniem.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | Indirect evidence | 5 contacts → | |||
“Immunity Systems to zespół specjalistów zajmujących się zagadnieniami związanymi z bezpieczeństwem IT.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | Partial evidence | 5 contacts → | |||
“We are a highly specialized cyber security company run by senior level consultants.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | Indirect evidence | 5 contacts → | |||
“Firma IT Auditor zajmuje się kompleksowym badaniem stanu bezpieczeństwa informacji.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | Partial evidence | 4 contacts → | |||
“Most companies get serious about security only when it’s already expensive: after a failed audit, after an incident, or under pressure from regulators.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | Indirect evidence | 4 contacts → | |||
“Incise your defence level, become proactive, act effectively, be resilient and become an impregnable fortress!” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | Partial evidence | 3 contacts → | |||
“Defensive Security delivers high-quality cyber security services including Linux / Windows digital forensics, incident response, latest threat analysis, and hunting, penetration…” Source: company website · checked Sep 6, 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: security testing 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 security testing companies.
- Partial evidence
- Its own public description names part of security testing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name security testing 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 25 of 72 security testing companies based in Poland
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Security testing companies based in Poland at a glance
As of Sep 6, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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 security testing 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 Poland whose own description of what they do matches “security testing 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 security testing 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 security testing companies, and records with no verified work email. Companies headquartered outside Poland 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, 159 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 6, 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 security testing 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 security testing companies are there based in Poland?
RevenueBase identified 72 security testing companies headquartered in Poland 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?
Deviqa, headquartered in Warsaw, tops this list with the largest team on record.
Which city has the most security testing companies?
Warszawa leads with 12 headquartered companies, followed by Warsaw (10) and Wroclaw (9).
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 159 verified decision-maker contacts tracked across these 72 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 6, 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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