Company lists · Data refreshed September 2026

Top 25 Cybersecurity consulting for defense based in Romania

Name: Cybersecurity consulting for defense based in Romania
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 71 companies tracked

RevenueBase identified 71 cybersecurity consulting for defense headquartered in Romania as of September 2026 and tracks 475 professional contacts across them, including 184 with verified work emails and 11 with mobile numbers. Bucharest is the largest hub.

This list covers cybersecurity consulting for defense headquartered in Romania, 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

71Companies

475Contacts tracked

184Verified emails

11Mobile numbers

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The 25 largest cybersecurity consulting for defense based in Romania

Ranked by team size

Top 25 of 71 cybersecurity consulting for defense based in Romania, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity consulting for defense: 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	Revelsi	Partial evidence	Bucharest, Romania	51-200	66 contacts →
	Partial evidence “RevelSI is a cybersecurity company structured on three core pillars - information security, infrastructure, and software development.” Source: RevenueBase Database · checked Sep 1, 2026
2	Safetech Innovations	Indirect evidence	Bucharest, Romania	51-200	53 contacts →
	Indirect evidence “Safetech Innovations was founded in 2011, by a team of Information Security and Information Technology experts, who decided to share their experience, to provide customers with…” Source: RevenueBase Database · checked Sep 1, 2026
3	Cybergen	Indirect evidence	Bucharest, Romania	51-200	50 contacts →
	Indirect evidence “At CyberGen, our mission is to empower individuals and businesses to achieve more by providing new opportunities.” Source: RevenueBase Database · checked Sep 1, 2026
4	Data Core Systems, Romania	Partial evidence	Romania	11-50	43 contacts →
	Partial evidence “Data Core Systems is a cybersecurity provider helping organizations tackle one of the biggest challenges of the digital environment.” Source: RevenueBase Database · checked Sep 1, 2026
5	Cyber Threat Defense	Partial evidence	Cluj-Napoca, Romania	51-200	34 contacts →
	Partial evidence “Cyber Threat Defense™ Everything we do is for companies to never have to worry about cyber security again.” Source: RevenueBase Database · checked Sep 1, 2026
6	BIT Sentinel	Indirect evidence	Bucharest, Romania	11-50	24 contacts →
	Indirect evidence “BIT SENTINEL is an information security company.” Source: RevenueBase Database · checked Sep 1, 2026
7	Fort Cyber	Strong evidence	Bucharest, Romania	11-50	24 contacts →
	Strong evidence “FORT is the cybersecurity defender you can trust to show up when you need it most.” Source: RevenueBase Database · checked Sep 1, 2026
8	Global Data	Indirect evidence	Bucharest, Romania	1-10	13 contacts →
	Indirect evidence “A successful cyber security approach has multiple layers of protection spread across the computers, networks, applications, or data that one intends to keep safe.” Source: RevenueBase Database · checked Sep 1, 2026
9	Cymed Security Technologies	Indirect evidence	Bucharest, Romania	11-50	11 contacts →
	Indirect evidence “CYMED a fost înființată ca divizie de securitate cibernetică a InfoWorld ulterior devenind entitate juridică independentă care deține propriul Centru de Operații de Securitate…” Source: RevenueBase Database · checked Sep 1, 2026
10	Cyber Smart Defence	Partial evidence	Bucharest, Romania	11-50	11 contacts →
	Partial evidence “Welcome to Cyber Smart Defence!” Source: RevenueBase Database · checked Sep 1, 2026
11	D3 Cyber	Strong evidence	Cluj-Napoca, Romania	1-10	8 contacts →
	Strong evidence “We’re more than just cybersecurity professionals – we’re your defense against cyber threats.” Source: RevenueBase Database · checked Sep 1, 2026
12	Enersec Technology	Indirect evidence	Bucuresti, Romania	1-10	8 contacts →
	Indirect evidence “Our team includes seasoned consultants and technicians, skilled and certified in all relevant areas of information / IT security who will design, develop, implement and support…” Source: RevenueBase Database · checked Sep 1, 2026
13	Cyberlifehacks	Partial evidence	Cluj-Napoca, Romania	1-10	7 contacts →
	Partial evidence “We are a company specialized in Cybersecurity for Embedded Systems across various industries, including Automotive, Industrial IoT, Consumer IoT, and Healthcare.” Source: RevenueBase Database · checked Sep 1, 2026
14	Zamolxis	Partial evidence	Bucharest, Romania	11-50	7 contacts →
	Partial evidence “Enterprise cybersecurity services: NIS2 & ISO 27001 compliance, penetration testing, red teaming, phishing simulations, attack surface management, MDR, vulnerability assessments…” Source: RevenueBase Database · checked Sep 1, 2026
15	Intensec	Partial evidence	Romania	11-50	6 contacts →
	Partial evidence “Consulting Services and Training: Cyber-Security, Protection of Classified Information, Business Counterintelligence” Source: RevenueBase Database · checked Sep 1, 2026
16	Axyome	Indirect evidence	Craiova, Romania	1-10	6 contacts →
	Indirect evidence “With a steadfast commitment to safeguarding your digital world, we're here to provide top-notch solutions, industry insights, and expert guidance.” Source: RevenueBase Database · checked Sep 1, 2026
17	Dotdna	Indirect evidence	Bucharest, Romania	11-50	5 contacts →
	Indirect evidence “We are a boutique cyber security company that provides specialized solutions for your digital security needs.” Source: RevenueBase Database · checked Sep 1, 2026
18	Cybrops	Indirect evidence	Bucharest, Romania	11-50	5 contacts →
	Indirect evidence “We are on a mission to transform the way organizations reach and maintain digital operational resilience.” Source: RevenueBase Database · checked Sep 1, 2026
19	Best Internet Security Biss	Indirect evidence	Romania	11-50	4 contacts →
	Indirect evidence “Founded in 2001 in Bucharest, Romania, Best Internet Security \| BISS is a Cyber Security dedicated company, focused on providing towards Romanian organizations of all types and…” Source: RevenueBase Database · checked Sep 1, 2026
20	Defence And Security Advisory Group	Partial evidence	Bucharest, Romania	1-10	3 contacts →
	Partial evidence “Defence market, consultancy, defence and security, military endowment programs” Source: RevenueBase Database · checked Sep 1, 2026
21	Netrunners	Partial evidence	Bucharest, Romania	11-50	2 contacts →
	Partial evidence “Netrunners offers a comprehensive range of cybersecurity services, including Penetration Testing, Red Team Engagements, Cybersecurity Training, and Security Audits.” Source: RevenueBase Database · checked Sep 1, 2026
22	Risktronics	Indirect evidence	Romania	1-10	2 contacts →
	Indirect evidence “Vulnerability Research Vulnerability Scanning / Vulnerability Assessment Penetration Testing (Black box, Gray box, White box): Network Penetration Testing (external/internal) Web…” Source: RevenueBase Database · checked Sep 1, 2026
23	Relax IT	Indirect evidence	Bucharest, Romania	11-50	1 contacts →
	Indirect evidence “Bine ați venit la Relax IT: o companie furnizoare de servicii și soluții IT de top, alături de partenerul nostru exclusiv în România, Network Dynamics, o companie cu un istoric…” Source: RevenueBase Database · checked Sep 1, 2026
24	Sectio Aurea	Strong evidence	Romania	11-50	1 contacts →
	Strong evidence “Sectio Aurea is an advanced cybersecurity consulting company established in 2018, specializing in security audits, strategic cybersecurity advisory, outsourced security services…” Source: RevenueBase Database · checked Sep 1, 2026
25	Itsales Boutique It, Cybersecurity And Privacy Consulting	Indirect evidence	Constanta, Romania	1-10	1 contacts →
	Indirect evidence “ITSales partners with businesses to make them secure, compliant, and audit-ready.” Source: RevenueBase Database · checked Sep 1, 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 consulting for defense. 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 consulting for defense.
Partial evidence: Its own public description names part of cybersecurity consulting for defense, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity consulting for defense. 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 25 of 71 cybersecurity consulting for defense based in Romania

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Cybersecurity consulting for defense based in Romania at a glance

As of Sep 1, 2026

38.7%Verified-email coverage

2.3%Mobile-number coverage

6.7Average contacts per company

1-10Median size (employees)

50.7%Largest-city concentration · Bucharest

Sep 1, 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 consulting for defense, 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 Romania whose own description of what they do matches “cybersecurity consulting for defense”. 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 for defense), 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 for defense, and records with no verified work email. Companies headquartered outside Romania 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, 184 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.

Cybersecurity consulting for defense by metro

Cybersecurity consulting for defense in Bucharest36

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 for defense, 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 for defense are there based in Romania?

RevenueBase identified 71 cybersecurity consulting for defense headquartered in Romania 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?

Revelsi, headquartered in Bucharest, tops this list with the largest team on record.

Which city has the most cybersecurity consulting for defense?

Bucharest leads with 36 headquartered companies, followed by Cluj-Napoca (6) and Bucuresti (4).

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 184 verified decision-maker contacts tracked across these 71 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.