Company lists · Data refreshed September 2026
Top 12 Network security consulting firms based in Bulgaria
RevenueBase identified 39 network security consulting firms headquartered in Bulgaria as of September 2026 and tracks 182 professional contacts across them, including 52 with verified work emails and 4 with mobile numbers. Sofia is the largest hub.
This list covers network security consulting firms headquartered in Bulgaria, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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.
The 12 largest network security consulting firms based in Bulgaria
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 25 | ||||
“K3Y has two major pillars, Cybersecurity Services & Research and Development.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 19 | ||||
“Protect your organization with SoCyber's comprehensive cybersecurity solutions!” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 12 | ||||
“We are CENTIO #CYBERSECURITY.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 12 | ||||
“We are a cybersecurity company that focuses on quality and efficiency.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 10 | ||||
“AKAT Technologies is the leading provider of integrated Information security solutions, Network Defense & Forensic Services and Managed IT Services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 4 | ||||
“След 20 години успешно сътрудничество и представителство на Panda Security за България а днес като златен партньор на WatchGuard® - световен лидер в решенията за сигурност…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 3 | ||||
“3Cyber-Sec is a boutique cybersecurity consultancy company founded back in 2020 by professionals with a rich background, and a passion for IT, threat detection, security, and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 3 | ||||
“Our mission is to be a reliable partner for our clients, to maintain a high level of information security by providing professional advice and assistance in structuring…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 3 | ||||
“Robust cybersecurity isn't a luxury - it's a necessity.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2 | ||||
“At Priority Zero, we are redefining cybersecurity with a modern, dynamic approach.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1 | ||||
“Lambda Bit is an engineer-led cybersecurity consultancy specialized in identifying and addressing security weaknesses that threaten your business.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1 | ||||
“Company is focused on Information Security and consults customers in the following security fields- Web Application - Mobile Application - Network and Firewalls - Penetration…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 12 of 39 network security consulting firms based in Bulgaria
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Network security consulting firms based in Bulgaria at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 network security consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Bulgaria whose own description of what they do matches “network security consulting firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among network security consulting firms, and records with no verified work email. Companies headquartered outside Bulgaria 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 an evidence 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, 52 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 5, 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
How many network security consulting firms are there based in Bulgaria?
RevenueBase identified 39 network security consulting firms headquartered in Bulgaria 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?
K3y, headquartered in Sofia, tops this list with the largest team on record.
Which city has the most network security consulting firms?
Sofia leads with 19 headquartered companies, followed by Varna (8) and Burgas (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 52 verified decision-maker contacts tracked across these 39 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 5, 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.
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