Company lists · Data refreshed September 2026

Top 25 Cybersecurity consulting agencies based in Greece

RevenueBase identified 91 company matches for cybersecurity consulting agencies associated with Greece as of September 2026 and tracks 1,598 professional contacts across them, including 719 with verified work emails and 70 with mobile numbers. Athens is the largest hub.

This list covers company matches for cybersecurity consulting agencies associated with Greece, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Sep 1, 2026 How this list was built
91Companies
1,598Contacts tracked
719Verified emails
70Mobile numbers
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The 25 largest cybersecurity consulting agencies based in Greece

Ranked by team size
Top 25 of 91 company matches for cybersecurity consulting agencies based in Greece, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 1, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAthens, Greece201-500311 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
2Exact matchAthens, Greece201-500242 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
3Exact matchThermi Thessaloniki, Greece51-200184 contacts →

Exact match

“CENSUS is a cybersecurity engineering powerhouse.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
4Exact matchThermi Thessaloniki, Greece51-200157 contacts →

Exact match

“ADACOM, a Byte subsidiary, enables security online for Financial Institutions, Telecom Operators, Governments and Large Organizations, in more than 30 countries in EMEA.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
5Exact matchGreece51-20088 contacts →

Exact match

“At EMPIST, our mission is to fuel businesses with the technology they need to succeed.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
6Exact matchAtene, Greece51-20081 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
7Exact matchAthens, Greece51-20056 contacts →

Exact match

“CyberOwl helps asset operators in the maritime and critical national infrastructure sectors gain visibility, cyber security and cyber compliance of systems on their distributed…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
8Exact matchMetamorfosi, Greece11-5025 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
9Exact matchGreece11-5025 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
10Exact matchAthens, Greece11-5020 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
11Exact matchGreece11-5019 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
12Exact matchGreece11-5017 contacts →

Exact match

“100+ years of combined experience.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
13Exact matchGreece11-5017 contacts →

Exact match

“Alphabit is an expert Cybersecurity services provider.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
14Exact matchGreece51-20016 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
15Exact matchGreece11-5015 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
16Exact matchGreece11-5013 contacts →

Exact match

“Η XGate προσφέρει ένα σύνολο υπηρεσιών ολιστικού ελέγχου ασφάλειας πληροφοριακών συστημάτων, που δεν στηρίζεται μόνο σε έτοιμα, γνωστά, αυτοματοποιημένα μοντέλα, αλλά κυρίως σε…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
17Exact matchGreece11-5012 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
18Exact matchAthens, Greece11-5012 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
19Exact matchAthens, Greece1-1011 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
20Exact matchPiraeus, Greece11-5011 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
21Exact matchGreece11-507 contacts →

Exact match

“A cyber security company that offers bespoke, impact-centric services through envisioning, designing, crafting and providing critical Cyber Security Solutions and advanced A.I.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
22Exact matchAthens, Greece51-2007 contacts →

Exact match

“Our mission statement illustrates our company culture: Ovit personnel provide Superior Security Services tailored specifically to the requirements of each individual or client's…”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
23Exact matchAthens, Greece11-507 contacts →

Exact match

“Established in 2024, TÜV AUSTRIA Trust IT stands as a subsidiary of TÜV AUSTRIA, specializing in comprehensive information security and IT-related services.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
24Exact matchGreece11-507 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
25Exact matchAthens, Greece11-507 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase

Showing 25 of 91 cybersecurity consulting agencies based in Greece

See the full list, filter by size, metro and specialty, and access 719 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity consulting agencies based in Greece at a glance

As of Sep 1, 2026
45.0%Verified-email coverage
4.4%Mobile-number coverage
17.6Average contacts per company
1-10Median size (employees)
40.7%Largest-city concentration · Athens
Sep 1, 2026Page data refreshed

Companies by employee count

1-10
52
11-50
25
51-200
11
201-500
2
501-1,000
1

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Greece whose business descriptions match “cybersecurity consulting agencies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 719 professional contacts with verified work emails across the full matched dataset. 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.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Cybersecurity consulting agencies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “cybersecurity consulting agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity consulting agencies are there based in Greece?

RevenueBase identified 91 company matches for cybersecurity consulting agencies associated with Greece as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Nviso Security tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most cybersecurity consulting agencies?

Athens leads with 37 company records, followed by Thessaloniki (3) and Kallithea (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 719 professional contacts with verified work emails tracked across these 91 companies; direct dials are available where recorded.

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 SmartSearch, 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.