Company lists · Data refreshed September 2026

Top 25 Cybersecurity consulting service providers based in Greece

RevenueBase identified 96 cybersecurity consulting service providers headquartered in Greece as of September 2026 and tracks 1,143 professional contacts across them, including 454 with verified work emails. Athens is the largest hub.

This list covers cybersecurity consulting service providers 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 14, 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 Sep 14, 2026 86% judged on-target in blind review
96Companies
1,143Contacts tracked
454Verified emails
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The 25 largest cybersecurity consulting service providers based in Greece

Ranked by team size
Top 25 of 96 cybersecurity consulting service providers based in Greece, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity consulting service providers: 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
1Indirect evidenceIrakleio, GreeceHQ checked Sep 14, 2026201-500270 contacts →

Indirect evidence

“Neurosoft is a leading Managed Services Provider (MSP) that specializes in offering end-to-end premium integrated services in the areas of Cyber Security, Technology and Field…”

Source: RevenueBase Database · checked Sep 14, 2026
2Partial evidenceAthens, GreeceHQ checked Sep 14, 202651-200194 contacts →

Partial evidence

“CENSUS is a cybersecurity engineering powerhouse.”

Source: RevenueBase Database · checked Sep 14, 2026
3Indirect evidenceAthens, GreeceHQ checked Sep 14, 202651-200159 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 Sep 14, 2026
4Indirect evidenceMetamorfosi, GreeceHQ checked Sep 14, 202611-5025 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 Sep 14, 2026
5Indirect evidenceChalandri, GreeceHQ checked Sep 14, 202611-5020 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 Sep 14, 2026
6Partial evidenceAthens, GreeceHQ checked Sep 14, 202611-5020 contacts →

Partial 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 14, 2026
7Indirect evidenceAthens, GreeceHQ checked Sep 14, 202611-5017 contacts →

Indirect evidence

“100+ years of combined experience.”

Source: RevenueBase Database · checked Sep 14, 2026
8Partial evidenceMetamorfosi, GreeceHQ checked Sep 14, 202651-20017 contacts →

Partial evidence

“Founded in 1988, INTERSTAR Security is offering a broad array of customized, high quality, integrated consulting and security services.”

Source: RevenueBase Database · checked Sep 14, 2026
9Partial evidenceKhalándrion, GreeceHQ checked Sep 14, 202611-5017 contacts →

Partial evidence

“Alphabit is an expert Cybersecurity services provider.”

Source: RevenueBase Database · checked Sep 14, 2026
10Partial evidenceAthens, GreeceHQ checked Sep 14, 202611-5015 contacts →

Partial evidence

“Reduce cybersecurity risk proactively by identifying security gaps and vulnerabilities before they can be exploited by malicious actors.”

Source: RevenueBase Database · checked Sep 14, 2026
11Indirect evidenceKallithéa, GreeceHQ checked Sep 14, 202611-5013 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 Sep 14, 2026
12Indirect evidenceAgios Dimitrios, GreeceHQ checked Sep 14, 202611-5012 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 Sep 14, 2026
13Partial evidenceChalandri Athens, GreeceHQ checked Sep 14, 202611-5012 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 14, 2026
14Partial evidenceAthens, GreeceHQ checked Sep 14, 20261-1011 contacts →

Partial 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 Sep 14, 2026
15Partial evidenceAgios Stefanos, GreeceHQ checked Sep 14, 20261-1010 contacts →

Partial evidence

“Sigma Business Network provides its customers with high-level, fully customized Consulting Services and Integrated Programs to assist them in the critical areas of- Risk &…”

Source: RevenueBase Database · checked Sep 14, 2026
16Indirect evidenceAthens, GreeceHQ checked Sep 14, 202611-507 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 Sep 14, 2026
17Indirect evidenceAmaroúsion, GreeceHQ checked Sep 14, 20261-107 contacts →

Indirect evidence

“ICT PROTECT is an information security firm, specialising in Security Management and Security Training services.”

Source: RevenueBase Database · checked Sep 14, 2026
18Indirect evidenceAthens, GreeceHQ checked Sep 14, 202651-2007 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 Sep 14, 2026
19Indirect evidenceAthens, GreeceHQ checked Sep 14, 202611-507 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 Sep 14, 2026
20Indirect evidenceKhalándrion, GreeceHQ checked Sep 14, 202611-507 contacts →

Indirect evidence

“ITACC Solutions empowers people and organizations to grow in the digital era in a productive, reliable, and secure way, and maximize their return on investment.”

Source: RevenueBase Database · checked Sep 14, 2026
21Partial evidenceAthens, GreeceHQ checked Sep 14, 202611-507 contacts →

Partial evidence

“Cygnus Technologies is a leading Greece-based provider of managed IT Cybersecurity services for the shipping industry.”

Source: RevenueBase Database · checked Sep 14, 2026
22Indirect evidenceCholargos - Athens, GreeceHQ checked Sep 14, 202611-507 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 Sep 14, 2026
23Indirect evidenceNea Smyrni, GreeceHQ checked Sep 14, 20261-107 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 14, 2026
24Indirect evidenceKoropi, GreeceHQ checked Sep 14, 202611-506 contacts →

Indirect 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 14, 2026
25Partial evidenceGreeceHQ checked Sep 14, 20261-106 contacts →

Partial evidence

“PeS Cybersecurity, your trusted partner in safeguarding your digital domain, born from the dynamic collaboration between two industry leaders, Pylones Hellas, and eSafe, brings…”

Source: RevenueBase Database · checked Sep 14, 2026

Showing 25 of 96 cybersecurity consulting service providers based in Greece

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Cybersecurity consulting service providers based in Greece at a glance

As of Sep 14, 2026
39.7%Verified-email coverage
11.9Average contacts per company
1-10Median size (employees)
37.5%Largest-city concentration · Athens
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
58
11-50
28
51-200
8
201-500
1
501-1,000
1

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 96 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 consulting service providers, 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 consulting service providers”. 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 consulting service providers), 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 consulting service providers, 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, 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 September 14, 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 consulting service providers by metro

  • Cybersecurity consulting service providers in Athens36

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 cybersecurity consulting service providers, 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 cybersecurity consulting service providers are there based in Greece?

RevenueBase identified 96 cybersecurity consulting service providers 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?

Neurosoft, headquartered in Greece, tops this list with the largest team on record.

Which city has the most cybersecurity consulting service providers?

Athens leads with 36 headquartered companies, followed by Thessaloniki (3) and Attica (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 454 verified decision-maker contacts tracked across these 96 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 14, 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.