Company lists · Data refreshed September 2026

Top 20 Endpoint security consulting firms based in Greece

RevenueBase identified 44 endpoint security consulting firms headquartered in Greece as of September 2026 and tracks 608 professional contacts across them, including 257 with verified work emails. Athens is the largest hub.

This list covers endpoint security consulting firms 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 28, 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 28, 2026 86% judged on-target in blind review
44Companies
608Contacts tracked
257Verified emails
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The 20 largest endpoint security consulting firms based in Greece

Ranked by team size
Top 20 of 44 endpoint security consulting firms based in Greece, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to endpoint security consulting firms: 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 evidenceAthens, GreeceHQ checked Sep 28, 202651-200194 contacts →

Indirect evidence

“CENSUS is a cybersecurity engineering powerhouse.”

Source: RevenueBase Database · checked Sep 28, 2026
2Partial evidenceAthens, GreeceHQ checked Sep 28, 202651-200159 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 28, 2026
3Indirect evidenceMetamorfosi, GreeceHQ checked Sep 28, 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 28, 2026
4Partial evidenceChalandri, GreeceHQ checked Sep 28, 202611-5020 contacts →

Partial evidence

“With constant integration of technology in every aspect of an organisation, information security is something that everyone needs.”

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceAthens, GreeceHQ checked Sep 28, 202611-5017 contacts →

Indirect evidence

“100+ years of combined experience.”

Source: RevenueBase Database · checked Sep 28, 2026
6Strong evidenceMetamorfosi, GreeceHQ checked Sep 28, 202651-20017 contacts →

Strong 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 28, 2026
7Indirect evidenceKhalándrion, GreeceHQ checked Sep 28, 202611-5017 contacts →

Indirect evidence

“Alphabit is an expert Cybersecurity services provider.”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceKallithéa, GreeceHQ checked Sep 28, 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 28, 2026
9Partial evidenceAgios Dimitrios, GreeceHQ checked Sep 28, 202611-5012 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 28, 2026
10Partial evidenceChalandri Athens, GreeceHQ checked Sep 28, 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 28, 2026
11Strong evidencePiraeus, GreeceHQ checked Sep 28, 202611-5011 contacts →

Strong evidence

“Vexillum Security was established to provide consulting services in the field of security in companies, organizations and individuals.”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidenceCholargos - Athens, GreeceHQ checked Sep 28, 202611-507 contacts →

Partial 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 28, 2026
13Indirect evidenceNea Smyrni, GreeceHQ checked Sep 28, 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 28, 2026
14Partial evidenceChalandri, GreeceHQ checked Sep 28, 20261-104 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 28, 2026
15Indirect evidenceChalandri, GreeceHQ checked Sep 28, 202611-504 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceChalandri, GreeceHQ checked Sep 28, 20261-102 contacts →

Indirect evidence

“Guarantees the protection of your privacy.”

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceAthens, GreeceHQ checked Sep 28, 20261-102 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceAmaroúsion, GreeceHQ checked Sep 28, 202611-502 contacts →

Indirect evidence

“Nisos Advisors was established in 2017 by a team of partners with extensive field experience each with over twenty years of line management and consultancy practice.”

Source: RevenueBase Database · checked Sep 28, 2026
19Strong evidenceKifisia, GreeceHQ checked Sep 28, 20261-102 contacts →

Strong evidence

“Security Consulting”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceThessaloniki, GreeceHQ checked Sep 28, 20261-101 contacts →

Indirect evidence

“At ST Consultant our mission is to empower our clients with the knowledge, strategies, and technologies needed to protect their assets, people, and information.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 20 of 44 endpoint security consulting firms based in Greece

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Endpoint security consulting firms based in Greece at a glance

As of Sep 28, 2026
42.3%Verified-email coverage
13.8Average contacts per company
1-10Median size (employees)
40.9%Largest-city concentration · Athens
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
26
11-50
14
51-200
3
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 44 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 endpoint security consulting firms, 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 “endpoint security consulting firms”. 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 endpoint security consulting firms), 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 endpoint security consulting firms, 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, 257 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 28, 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 endpoint security consulting firms, 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 endpoint security consulting firms are there based in Greece?

RevenueBase identified 44 endpoint security consulting firms 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?

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

Which city has the most endpoint security consulting firms?

Athens leads with 18 headquartered companies, followed by Piraeus (2) and Attica (1).

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 257 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 28, 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.