Company lists · Data verified August 2026

Top 25 Cybersecurity startups based in Romania

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 85 companies tracked

There are 85 cybersecurity startups headquartered in Romania (RevenueBase, August 2026). RevenueBase tracks 8,375 professional contacts across them, including 3,049 with verified work emails and 1,300 with mobile numbers. Bucharest is the largest hub.

This list covers cybersecurity startups headquartered in Romania, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

85Companies

8,375Contacts tracked

3,049Verified emails

1,300Mobile numbers

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The 25 largest cybersecurity startups based in Romania

Ranked by team size

Top 25 of 85 cybersecurity startups based in Romania, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Check Point Software	n/a	5,001-10,000	7,777	2,845
2	Revelsi	Bucharest	51-200	66	24
3	Safetech Innovations	Bucharest	51-200	53	42
4	Cybergen	Bucharest	51-200	50	7
5	Cryptodata Tech	Bucharest	11-50	44	8
6	Data Core Systems, Romania	n/a	11-50	43	27
7	Cyber Threat Defense	Cluj-Napoca	51-200	34	14
8	BIT Sentinel	Bucharest	11-50	24	16
9	Fort Cyber	Bucharest	11-50	24	15
10	Nextgen Software	Bucuresti	11-50	21	12
11	Global Data	Bucharest	1-10	13	1
12	Cyber Smart Defence	Bucharest	11-50	11	2
13	D3 Cyber	Cluj-Napoca	1-10	8	5
14	Enersec Technology	Bucuresti	1-10	8	2
15	Cyberlifehacks	Cluj-Napoca	1-10	7	4
16	Zamolxis	Bucharest	11-50	7	1
17	Axyome	Craiova	1-10	6	1
18	Dotdna	Bucharest	11-50	5	5
19	Blackshell	Bucharest	11-50	5	3
20	Cybrops	Bucharest	11-50	5	2
21	Espace IT	Cluj Napoca	1-10	4	2
22	Best Internet Security Biss	n/a	11-50	4	1
23	Eset Romania	Bucharest	11-50	3	2
24	Netrunners	Bucharest	11-50	2	1
25	Risktronics	n/a	1-10	2	1

Showing 25 of 85 cybersecurity startups based in Romania

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Cybersecurity startups based in Romania at a glance

As of Aug 28, 2026

1-10Median size (employees)

BucharestLargest hub · 39 HQs

1,300Contacts with mobile numbers

5Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

5,001-10,000

Cybersecurity startups by metro

Metro	Companies
Cybersecurity startups in Bucharest	39
Cybersecurity startups in Cluj-Napoca	5
Cybersecurity startups in Bucuresti	5
Cybersecurity startups in Timisoara	4
Cybersecurity startups in Constanta	2
Cybersecurity startups in Craiova	2
Cybersecurity startups in Voluntari	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “cybersecurity startups”, with match quality audited by blind human judging, and headquartered in Romania.
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: Contact records re-verify on a rolling cadence; 5 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many cybersecurity startups are there based in Romania?

There are 85 cybersecurity startups headquartered in Romania as of August 2026 (RevenueBase).

What is the largest company on this list?

Check Point Software, headquartered in Romania, tops this list with the largest team on record.

Which city has the most cybersecurity startups?

Bucharest leads with 39 headquartered companies, followed by Cluj-Napoca (5) and Bucuresti (5).

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 3,049 verified decision-maker contacts tracked across these 85 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.