Company lists · Data refreshed August 2026

Top 22 Cybersecurity companies based in Athens, Greece

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

Compiled by the RevenueBase Data Team Data refreshed Aug 30, 2026 44 companies tracked

Our directory lists 44 cybersecurity companies based in Athens, Greece, with 835 professional contacts and 454 email addresses. The list was last updated in August 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 August 30, 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 RevenueBase Smart Search rating on every row Refreshed Aug 30, 2026 86% judged on-target in blind review

44Companies

835Contacts tracked

454Verified emails

10Mobile numbers

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The 22 largest cybersecurity companies based in Athens, Greece

Ranked by team size

Top 22 of 44 cybersecurity companies based in Athens, Greece, ranked by team size, largest first. Data refreshed Aug 30, 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	Nviso Security	Indirect evidence	Athens, Greece	201-500	311 contacts →
	Indirect evidence “NVISO is a cyber security services firm composed of outstanding security professionals - each has a specific field of expertise, ranging from security research and risk management…” Source: RevenueBase Database · checked Aug 30, 2026
2	Obrela	Indirect evidence	Athens, Greece	201-500	242 contacts →
	Indirect evidence “Obrela Security Industries is a global provider of cyber security services.” Source: RevenueBase Database · checked Aug 30, 2026
3	Cyberowl	Indirect evidence	Athens, Greece	51-200	56 contacts →
	Indirect evidence “CyberOwl helps asset operators in the maritime and critical national infrastructure sectors gain visibility, cyber security and cyber compliance of systems on their distributed…” Source: RevenueBase Database · checked Aug 30, 2026
4	Cyberscope, A TAC Security Company	Indirect evidence	Athens, Greece	11-50	23 contacts →
	Indirect evidence “CyberScope is a leading blockchain security company, providing end-to-end protection for Web3 projects.” Source: RevenueBase Database · checked Aug 30, 2026
5	Threatscene	Strong evidence	Athens, Greece	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 Aug 30, 2026
6	Geniusnet SA	Strong evidence	Athens, Greece	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 Aug 30, 2026
7	Cyberflip	Strong evidence	Athens, Greece	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 Aug 30, 2026
8	Accessit LTD	Indirect evidence	Athens, Greece	11-50	9 contacts →
	Indirect evidence “Accessit is a dynamically developing company that provides integrated solutions in the field of Internet.” Source: RevenueBase Database · checked Aug 30, 2026
9	Ovit P.C	Indirect evidence	Athens, Greece	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 Aug 30, 2026
10	Netbull IT Services LTD	Indirect evidence	Athens, Greece	51-200	7 contacts →
	Indirect evidence “Netbull is merged with absorption and now is part of ADACOM SA, delivering Cyber Security Solutions and cutting-edge Services, empowering organizations to better protect against…” Source: RevenueBase Database · checked Aug 30, 2026
11	TÜV Austria Trust IT GR	Indirect evidence	Athens, Greece	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 Aug 30, 2026
12	Plugsecure	Strong evidence	Athens, Greece	1-10	7 contacts →
	Strong evidence “Safeguarding the future of energy with cybersecurity & reliability intelligent solutions for critical infrastructure.” Source: RevenueBase Database · checked Aug 30, 2026
13	Cygnus Technologies	Strong evidence	Athens, Greece	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 Aug 30, 2026
14	Cysoft LTD	Indirect evidence	Athens, Greece	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 Aug 30, 2026
15	Headnet	Strong evidence	Athens, Greece	1-10	6 contacts →
	Strong evidence “At HEADNET, we deliver advanced networking and cybersecurity solutions designed to meet your unique business needs.” Source: RevenueBase Database · checked Aug 30, 2026
16	I-Metrix	Indirect evidence	Athens, Greece	11-50	5 contacts →
	Indirect evidence “Started in is now one of the leading companies in managed security services.” Source: RevenueBase Database · checked Aug 30, 2026
17	Cyberone S.A	Indirect evidence	Athens, Greece	1-10	4 contacts →
	Indirect evidence “At CyberOne we select and integrate the most advanced IT security solutions to address the evolving needs of corporate customers who must protect their information repositories…” Source: RevenueBase Database · checked Aug 30, 2026
18	Vital Digital Forensics	Indirect evidence	Athens, Greece	1-10	4 contacts →
	Indirect evidence “Privately held company providing cyber-security services, specializing in Digital Forensics / Incident Response (DFIR), malware analysis.” Source: RevenueBase Database · checked Aug 30, 2026
19	Bitrezus P.C	Strong evidence	Athens, Greece	1-10	3 contacts →
	Strong evidence “BitRezus is a startup developing a cybersecurity layer for secure and resilient Space Operations and Satellite Data.” Source: RevenueBase Database · checked Aug 30, 2026
20	Fractis	Indirect evidence	Athens, Greece	1-10	2 contacts →
	Indirect evidence “We are a cyber security firm based in Greece operating in the EMEA region.” Source: RevenueBase Database · checked Aug 30, 2026
21	Secnews	Strong evidence	Athens, Greece	11-50	2 contacts →
	Strong evidence “SecNews.gr is the first independent cybersecurity news platform in Greece, dedicated to IT security, hacking, and digital threat intelligence.” Source: RevenueBase Database · checked Aug 30, 2026
22	Safety NET	Indirect evidence	Athens, Greece	1-10	1 contacts →
	Indirect evidence “Security and Networks Appliances Εφαρμογές Δικτύων και Συστημάτων Ασφαλείας Safety NET \| Η τεχνολογία του αύριο.” Source: RevenueBase Database · checked Aug 30, 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 22 of 44 cybersecurity companies based in Athens, Greece

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Cybersecurity companies based in Athens, Greece at a glance

As of Aug 30, 2026

54.4%Verified-email coverage

1.2%Mobile-number coverage

19.0Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Athens

Aug 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 Athens, 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 Athens 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, 454 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 30, 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 in Greece

Cybersecurity companies in Athens44

Frequently asked

How many cybersecurity companies are in the directory?

The directory lists 44 cybersecurity companies based in Athens, 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 835 professional contacts and 454 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.