Company lists · Data refreshed October 2026

Top 25 Cybersecurity companies based in Greece

Name: Cybersecurity companies based in Greece
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 101 companies tracked

Our directory lists 101 cybersecurity companies based in Greece, with 898 professional contacts and 360 email addresses. The list was last updated in October 2026, and Athens is the single most-represented city among the companies listed.

Cybersecurity companies provide products and services that protect systems, networks, applications, devices, and data from unauthorized access, disruption, or misuse. This list covers companies that provide cybersecurity products, services, consulting, assessments, monitoring, incident response, or related protection for digital systems and data. Ranked by team size, largest first. Data current as of October 1, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Oct 1, 2026 86% judged on-target in blind review

101Companies

898Contacts tracked

360Verified emails

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The 25 largest cybersecurity companies based in Greece

Ranked by team size

Top 25 of 101 cybersecurity companies based in Greece, ranked by team size, largest first. Data refreshed Oct 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Census	Strong evidence	Athens, GreeceHQ checked Oct 1, 2026	51-200	194 contacts →
	Strong evidence “CENSUS is a cybersecurity engineering powerhouse.” Source: RevenueBase Database · checked Oct 1, 2026
2	Adacom	Indirect evidence	Athens, GreeceHQ checked Oct 1, 2026	51-200	159 contacts →
	Indirect evidence “ADACOM, a Byte subsidiary, enables security online for Financial Institutions, Telecom Operators, Governments and Large Organizations, in more than 30 countries in EMEA.” Source: RevenueBase Database · checked Oct 1, 2026
3	Systecom S.A	Indirect evidence	Metamorfosi, GreeceHQ checked Oct 1, 2026	11-50	25 contacts →
	Indirect evidence “Our company's structure is based on a modern and flexible model ensuring adaptation in running developments but also in continuous requirements and needs of our clients.” Source: RevenueBase Database · checked Oct 1, 2026
4	Cyberscope, A TAC Security Company	Indirect evidence	Athens, GreeceHQ checked Oct 1, 2026	11-50	24 contacts →
	Indirect evidence “CyberScope is a leading blockchain security company, providing end-to-end protection for Web3 projects.” Source: RevenueBase Database · checked Oct 1, 2026
5	Metamind Innovations - Minds	Indirect evidence	Kozani, GreeceHQ checked Oct 1, 2026	11-50	21 contacts →
	Indirect evidence “Established in May 2021, MetaMind Innovations is the first spin-off of the University of Western Macedonia.” Source: RevenueBase Database · checked Oct 1, 2026
6	Twelvesec	Indirect evidence	Chalandri, GreeceHQ checked Oct 1, 2026	11-50	20 contacts →
	Indirect evidence “With constant integration of technology in every aspect of an organisation, information security is something that everyone needs.” Source: RevenueBase Database · checked Oct 1, 2026
7	Threatscene	Strong evidence	Athens, GreeceHQ checked Oct 1, 2026	11-50	20 contacts →
	Strong evidence “At ThreatScene, we are committed to setting new standards in cybersecurity by delivering exceptional, high-quality services designed to protect your most valuable digital assets.” Source: RevenueBase Database · checked Oct 1, 2026
8	Alphabit Cybersecurity	Strong evidence	Khalándrion, GreeceHQ checked Oct 1, 2026	11-50	17 contacts →
	Strong evidence “Alphabit is an expert Cybersecurity services provider.” Source: RevenueBase Database · checked Oct 1, 2026
9	Eset Greece, Cyprus & Malta	Strong evidence	Athens, GreeceHQ checked Oct 1, 2026	11-50	16 contacts →
	Strong evidence “Since its beginning, ESET cybersecurity software has empowered people to use IT to improve their lives and grow their businesses.” Source: RevenueBase Database · checked Oct 1, 2026
10	Cenobe Cybersecurity	Strong evidence	Athens, GreeceHQ checked Oct 1, 2026	11-50	15 contacts →
	Strong evidence “Reduce cybersecurity risk proactively by identifying security gaps and vulnerabilities before they can be exploited by malicious actors.” Source: RevenueBase Database · checked Oct 1, 2026
11	Xgate Solutions	Indirect evidence	Kallithéa, GreeceHQ checked Oct 1, 2026	11-50	13 contacts →
	Indirect evidence “Η XGate προσφέρει ένα σύνολο υπηρεσιών ολιστικού ελέγχου ασφάλειας πληροφοριακών συστημάτων, που δεν στηρίζεται μόνο σε έτοιμα, γνωστά, αυτοματοποιημένα μοντέλα, αλλά κυρίως σε…” Source: RevenueBase Database · checked Oct 1, 2026
12	Cyber Noesis	Indirect evidence	Agios Dimitrios, GreeceHQ checked Oct 1, 2026	11-50	12 contacts →
	Indirect evidence “CyberNoesis was established in 2015 by cyber security specialists with extensive experience in enterprise, industrial and telecommunications sectors.” Source: RevenueBase Database · checked Oct 1, 2026
13	Geniusnet SA	Strong evidence	Chalandri Athens, GreeceHQ checked Oct 1, 2026	11-50	12 contacts →
	Strong evidence “GeniusNet SA is a High tech Cybersecurity and Smart security Company specialized on Supporting your business!” Source: RevenueBase Database · checked Oct 1, 2026
14	Logstail	Strong evidence	Athens, GreeceHQ checked Oct 1, 2026	1-10	12 contacts →
	Strong evidence “Logstail is a next-generation cybersecurity platform that unifies SIEM, log management, threat detection, observability, and compliance into one powerful solution.” Source: RevenueBase Database · checked Oct 1, 2026
15	Cyberflip	Strong evidence	Athens, GreeceHQ checked Oct 1, 2026	1-10	11 contacts →
	Strong evidence “We are here to jointly understand and address in practice how Cybersecurity can be a business enabler- Providing Cybersecurity services, industry-specific, vendor neutral and…” Source: RevenueBase Database · checked Oct 1, 2026
16	MTG Hellas	Indirect evidence	Argiroupoli, GreeceHQ checked Oct 1, 2026	11-50	10 contacts →
	Indirect evidence “MTG Hellas is the subsidiary of MTG AG in Greece.” Source: RevenueBase Database · checked Oct 1, 2026
17	Mind The Hack	Indirect evidence	Palaión Fáliron, GreeceHQ checked Oct 1, 2026	11-50	10 contacts →
	Indirect evidence “Mind The Hack is an EU-built cyber exposure platform that helps organizations continuously identify, validate and prioritize real cyber risk across their internal and external…” Source: RevenueBase Database · checked Oct 1, 2026
18	Accessit LTD	Indirect evidence	Athens, GreeceHQ checked Oct 1, 2026	11-50	8 contacts →
	Indirect evidence “Accessit is a dynamically developing company that provides integrated solutions in the field of Internet.” Source: RevenueBase Database · checked Oct 1, 2026
19	Memorandum	Indirect evidence	Athens, GreeceHQ checked Oct 1, 2026	11-50	7 contacts →
	Indirect evidence “A cyber security company that offers bespoke, impact-centric services through envisioning, designing, crafting and providing critical Cyber Security Solutions and advanced A.I.” Source: RevenueBase Database · checked Oct 1, 2026
20	Ovit P.C	Indirect evidence	Athens, GreeceHQ checked Oct 1, 2026	51-200	7 contacts →
	Indirect evidence “Our mission statement illustrates our company culture: Ovit personnel provide Superior Security Services tailored specifically to the requirements of each individual or client's…” Source: RevenueBase Database · checked Oct 1, 2026
21	TÜV Austria Trust IT GR	Indirect evidence	Athens, GreeceHQ checked Oct 1, 2026	11-50	7 contacts →
	Indirect evidence “Established in 2024, TÜV AUSTRIA Trust IT stands as a subsidiary of TÜV AUSTRIA, specializing in comprehensive information security and IT-related services.” Source: RevenueBase Database · checked Oct 1, 2026
22	Ai2cyber	Indirect evidence	Glifada, GreeceHQ checked Oct 1, 2026	11-50	7 contacts →
	Indirect evidence “AI2CYBER - Agentic AI for Autonomous Cyber Defense Cyber threats no longer wait - In 2026, attackers move with precision, automation, and intent - AI2CYBER responds with Agentic…” Source: RevenueBase Database · checked Oct 1, 2026
23	Cygnus Technologies	Strong evidence	Athens, GreeceHQ checked Oct 1, 2026	11-50	7 contacts →
	Strong evidence “Cygnus Technologies is a leading Greece-based provider of managed IT Cybersecurity services for the shipping industry.” Source: RevenueBase Database · checked Oct 1, 2026
24	Trust-It Security Intelligence	Indirect evidence	Cholargos - Athens, GreeceHQ checked Oct 1, 2026	11-50	7 contacts →
	Indirect evidence “Trust-IT (Trust Information Technologies) is an Enterprise Security Provider & IT Solutions Company, which leverages the sector of IT Security Intelligence in conjunction with…” Source: RevenueBase Database · checked Oct 1, 2026
25	Cysoft LTD	Indirect evidence	Nea Smyrni, GreeceHQ checked Oct 1, 2026	1-10	7 contacts →
	Indirect evidence “Η Cysoft Σύμβουλοι Πληροφορικής ΕΠΕ ιδρύθηκε το 1998 για να διαθέσει στην Ελληνική Αγορά επιλεγμένα προϊόντα και λύσεις ασφάλειας πληροφορικής.” Source: RevenueBase Database · checked Oct 1, 2026

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: cybersecurity 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 cybersecurity companies.
Partial evidence: Its own public description names part of cybersecurity companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity 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 101 cybersecurity companies based in Greece

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Cybersecurity companies based in Greece at a glance

As of Oct 1, 2026

40.1%Verified-email coverage

8.9Average contacts per company

1-10Median size (employees)

44.6%Largest-city concentration · Athens

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured worldwide rather than for Greece, so it is reported there. Company counts and contact totals on this page are exact for Greece, over 101 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 cybersecurity 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 Greece whose own description of what they do matches “cybersecurity 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 cybersecurity 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 cybersecurity companies, and records with no verified work email. Companies headquartered outside Greece 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, 360 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 October 1, 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.

Cybersecurity companies by metro

Cybersecurity companies in Athens45

Frequently asked

How many cybersecurity companies are in the directory?

The directory lists 101 cybersecurity companies based in Greece.

Which city has the most cybersecurity companies?

Athens is the single most-represented city among the cybersecurity companies on the list.

How many contacts are available for cybersecurity companies?

The directory includes 898 professional contacts and 360 email addresses for the listed cybersecurity companies.

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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.