Company lists · Data refreshed September 2026

Top 22 Content-aware security companies based in Greece

RevenueBase identified 44 content-aware security companies headquartered in Greece as of September 2026 and tracks 1,177 professional contacts across them, including 578 with verified work emails and 24 with mobile numbers. Athens is the largest hub.

This list covers content-aware security companies headquartered in Greece, 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 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 RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review
44Companies
1,177Contacts tracked
578Verified emails
24Mobile numbers
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The 22 largest content-aware security companies based in Greece

Ranked by team size
Top 22 of 44 content-aware security companies based in Greece, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to content-aware security 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceAthens, Greece201-500311 contacts →

Partial 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 Sep 1, 2026
2Partial evidenceAthens, Greece201-500242 contacts →

Partial evidence

“Obrela Security Industries is a global provider of cyber security services.”

Source: RevenueBase Database · checked Sep 1, 2026
3Indirect evidenceThermi Thessaloniki, Greece51-200184 contacts →

Indirect evidence

“CENSUS is a cybersecurity engineering powerhouse.”

Source: RevenueBase Database · checked Sep 1, 2026
4Partial evidenceThermi Thessaloniki, Greece51-200157 contacts →

Partial 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 Sep 1, 2026
5Partial evidenceAtene, Greece51-20081 contacts →

Partial evidence

“Itway Cyber Security and Resiliency, parte del Gruppo Itway, supporta le organizzazioni nella protezione degli ambienti digitali e mission-critical, garantendo operatività sicura…”

Source: RevenueBase Database · checked Sep 1, 2026
6Indirect evidenceGreece11-5025 contacts →

Indirect evidence

“K3Y has two major pillars, Cybersecurity Services & Research and Development.”

Source: RevenueBase Database · checked Sep 1, 2026
7Indirect evidenceAthens, Greece11-5020 contacts →

Indirect 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 Sep 1, 2026
8Indirect evidenceGreece11-5017 contacts →

Indirect evidence

“Alphabit is an expert Cybersecurity services provider.”

Source: RevenueBase Database · checked Sep 1, 2026
9Partial evidenceGreece11-5012 contacts →

Partial evidence

“CyberNoesis was established in 2015 by cyber security specialists with extensive experience in enterprise, industrial and telecommunications sectors.”

Source: RevenueBase Database · checked Sep 1, 2026
10Partial evidenceAthens, Greece11-5012 contacts →

Partial evidence

“GeniusNet SA is a High tech Cybersecurity and Smart security Company specialized on Supporting your business!”

Source: RevenueBase Database · checked Sep 1, 2026
11Indirect evidenceAthens, Greece11-509 contacts →

Indirect evidence

“Accessit is a dynamically developing company that provides integrated solutions in the field of Internet.”

Source: RevenueBase Database · checked Sep 1, 2026
12Partial evidenceGreece11-507 contacts →

Partial 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 Sep 1, 2026
13Partial evidenceAthens, Greece11-507 contacts →

Partial 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 Sep 1, 2026
14Indirect evidenceAthens, Greece1-107 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 Sep 1, 2026
15Partial evidenceGreece11-506 contacts →

Partial evidence

“Logisek is a leading Cyber Security and IT services firm, founded in Greece in 2008 and expanded to Romania in 2019.”

Source: RevenueBase Database · checked Sep 1, 2026
16Indirect evidenceAthens, Greece1-106 contacts →

Indirect evidence

“At HEADNET, we deliver advanced networking and cybersecurity solutions designed to meet your unique business needs.”

Source: RevenueBase Database · checked Sep 1, 2026
17Partial evidenceAthens, Greece11-505 contacts →

Partial evidence

“Started in is now one of the leading companies in managed security services.”

Source: RevenueBase Database · checked Sep 1, 2026
18Partial evidenceAthens, Greece1-104 contacts →

Partial 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 Sep 1, 2026
19Partial evidenceAthens, Greece1-104 contacts →

Partial evidence

“Privately held company providing cyber-security services, specializing in Digital Forensics / Incident Response (DFIR), malware analysis.”

Source: RevenueBase Database · checked Sep 1, 2026
20Partial evidenceAthens, Greece1-102 contacts →

Partial evidence

“We are a cyber security firm based in Greece operating in the EMEA region.”

Source: RevenueBase Database · checked Sep 1, 2026
21Partial evidenceGreece1-102 contacts →

Partial evidence

“Η CyberX, ιδρύθηκε με στόχο να προσφέρει καινοτόμες υπηρεσίες Ασφάλειας Πληροφοριακών Συστημάτων (Information Security Services & Cyber Security Services), χτίζοντας μία ασπίδα…”

Source: RevenueBase Database · checked Sep 1, 2026
22Indirect evidenceGreece1-102 contacts →

Indirect evidence

“Guarantees the protection of your privacy.”

Source: RevenueBase Database · checked Sep 1, 2026

Showing 22 of 44 content-aware security companies based in Greece

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Content-aware security companies based in Greece at a glance

As of Sep 1, 2026
49.1%Verified-email coverage
2.0%Mobile-number coverage
26.8Average contacts per company
1-10Median size (employees)
50.0%Largest-city concentration · Athens
Sep 1, 2026Page data refreshed

Companies by employee count

1-10
24
11-50
13
51-200
5
201-500
2

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 content-aware 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 Greece whose own description of what they do matches “content-aware 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 content-aware 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 content-aware security 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, 578 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 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.

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 content-aware 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 content-aware security companies are there based in Greece?

RevenueBase identified 44 content-aware security companies headquartered in Greece 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?

Nviso Security, headquartered in Athens, tops this list with the largest team on record.

Which city has the most content-aware security companies?

Athens leads with 22 headquartered companies, followed by Thermi Thessaloniki (2) and Thessaloniki (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 578 verified decision-maker contacts tracked across these 44 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 1, 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.