Company lists · Data refreshed September 2026
Top 25 IT security services based in Türkiye
RevenueBase identified 375 IT security services headquartered in Türkiye as of September 2026 and tracks 3,229 professional contacts across them, including 772 with verified work emails. Istanbul is the largest hub.
This list covers IT security services headquartered in Türkiye, 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 21, 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.
The 25 largest IT security services based in Türkiye
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 113 contacts → | ||||
Partial evidence “ADEO Cyber Security is a trusted cybersecurity partner enabling organizations to build resilient, proactive, and continuous cyber defense capabilities.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 93 contacts → | ||||
Indirect evidence “Netsmart, 25 yılı aşkın tecrübesiyle siber güvenlik alanında uzmanlaşmış lider bir danışmanlık şirketidir.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 91 contacts → | ||||
Indirect evidence “Platin Bilişim, ”Siber Güvenlik”, “Bütünsel Güvenlik” ve "Veri Koruma" çözümleri alanlarında hizmet veren bir teknoloji firmasıdır.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 87 contacts → | ||||
Indirect evidence “Beyaz.net 1997 yılında kurulmuştur.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 81 contacts → | ||||
Partial evidence “Privia Security, which plans to bring a different perspective to security and privacy concepts by acting with the slogan of “Privacy For You” in the field of cyber security, took…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 69 contacts → | ||||
Partial evidence “2017 yılında bilgi güvenliği konusunda danışmanlık, servis ve destek hizmetleri vermek amacıyla kurulan Infinitum IT, siber olaylara müdahale hizmetleri, güvenli kod…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 68 contacts → | ||||
Indirect evidence “Bilgi güvenliği ve siber güvenlik alanında müşterilerimize seçkin hizmetler sunuyor ve alanımızda bir dünya markası olmak için çalışıyoruz.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 65 contacts → | ||||
Indirect evidence “Soitron Siber Güvenlik Servisleri A.Ş, is the Turkish cybersecurity company of Europe-based information technology firm Soitron Group.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 62 contacts → | ||||
Indirect evidence “PURE7 is a technology company dedicated to providing solutions to its clients' digital challenges with a team of experts specializing in their respective fields.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 59 contacts → | ||||
Partial evidence “At Infosec, we don't just keep up with the rapid pace of cybersecurity-we set it.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 54 contacts → | ||||
Indirect evidence “Teknoloji ve inovasyon aracılığıyla, müşterilerimiz, çalışma arkadaşlarımız, iş ortaklarımız ve çevremiz için güvenli bir gelecek inşa etmek için çalışıyoruz!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 51 contacts → | ||||
Indirect evidence “CyberForce, 30'dan fazla ülkeyi kapsayan entegre bir ağa sahip küresel bir ürün ve hizmet grubudur.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 46 contacts → | ||||
Indirect evidence “Servicepark olarak uzun yıllardır bilişim sektöründe olan kaliteli bir ekip ile, müşterilerimize en yüksek kalitede çözüm ve danışmanlık hizmetleri sağlayarak özellikle kritik…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 45 contacts → | ||||
Partial evidence “As the leading cybersecurity solutions provider [in Turkey], Cyberwise has a holistic approach to cybersecurity including IT, OT, and Cyber Physical Systems (CPS).” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 44 contacts → | ||||
Strong evidence “RSU provides services on IT Risk Solutions, such as IT risk and compliance, penetration testing, cyber security consultancy, digital forensic, incident response, and training to…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 42 contacts → | ||||
Indirect evidence “Tetra Bilişim, yenilikçi ve önder yaklaşımı ile ülkemiz bilişim sektörüne ve bilgi güvenliğine sürekli katkı sağlamaktadır.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 34 contacts → | ||||
Indirect evidence “InfoNet, 1995 yılından bu yana Türkiye'de bilgi teknolojileri sektörüne yönelik kurumsal ağ güvenliği, bilgi güvenliği ve sistem entegrasyon çözümleri sunmakta ve ilgili kurumlara…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 34 contacts → | ||||
Partial evidence “BG-TEK was established in 2010 with the aim of providing cyber security services and developing cyber security products.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 30 contacts → | ||||
Indirect evidence “About BGA Bilgi Güvenliği A.Ş.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 28 contacts → | ||||
Indirect evidence “Fordefence provides enterprise cybersecurity and digital forensics services to help organizations prevent, detect, and forensically investigate cyber incidents.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 26 contacts → | ||||
Indirect evidence “Gais Siber Güvenlik Teknolojileri https://twitter.com/gaissecurity” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 25 contacts → | ||||
Strong evidence “As BARİKAT Cyber Security, we have been emphasizing the value of information by producing world-class cyber security solutions with the aim of protecting it, since our…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 25 contacts → | ||||
Partial evidence “Bilishim Cyber Security and Artificial Intelligence Ltd is established with the vision of providing cyber security services and trainings and producing projects which apply…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 24 contacts → | ||||
Indirect evidence “Secunnix'in kuruluş hikayesi şirket kurucularının 2006 yılında Siber Güvenlik dünyasına attıkları adım ile başladı.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 23 contacts → | ||||
Strong evidence “IT & OT Network and Cyber Security Project Management” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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: IT security services. 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 IT security services.
- Partial evidence
- Its own public description names part of IT security services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name IT security services. 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 375 IT security services based in Türkiye
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 772 reachable decision-makers.
Free signup · no credit card
IT security services based in Türkiye at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Türkiye, so it is reported there. Company counts and contact totals on this page are exact for Türkiye, over 375 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 IT security services, 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 Türkiye whose own description of what they do matches “IT security services”. 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 IT security services), 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 IT security services, and records with no verified work email. Companies headquartered outside Türkiye 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, 772 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 21, 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.
IT security services by metro
- IT security services in Istanbul137
- IT security services in Ankara43
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 IT security services, 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 IT security services are there based in Türkiye?
RevenueBase identified 375 IT security services headquartered in Türkiye 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?
Adeo Cyber Security, headquartered in Atasehir, tops this list with the largest team on record.
Which city has the most IT security services?
Istanbul leads with 137 headquartered companies, followed by Ankara (43) and Cankaya (15).
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 772 verified decision-maker contacts tracked across these 375 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 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 375 IT security services based in Türkiye. Start with a free account, no credit card.
Download this list →Related lists
IT security services by geography
- IT security services based in Brisbane, Australia
- IT security services based in Canberra, Australia
- IT security services based in Melbourne, Australia
- IT security services based in Perth, Australia
- IT security services based in Sydney, Australia
- IT security services based in Barueri, Brazil
- IT security services based in Belo Horizonte, Brazil
- IT security services based in Brasilia, Brazil
- IT security services based in Curitiba, Brazil
- IT security services based in Porto Alegre, Brazil
- IT security services based in Rio De Janeiro, Brazil
- IT security services based in Sao Paulo, Brazil
Browse the directory
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- IT security services based in Brisbane, Australia
- IT security services based in Canberra, Australia
- IT security services based in Melbourne, Australia
- IT security services based in Perth, Australia
- IT security services based in Sydney, Australia
- IT security services based in Barueri, Brazil