# 25 leading cybersecurity companies in Turkey

Tamtam tracks 25 cybersecurity companies headquartered in Turkey. This list ranks all of them by number of employees on LinkedIn, led by HAVELSAN, TÜBİTAK BİLGEM and NETAŞ. Their median headcount is 229. Half of them were founded in 2008 or later. The most common headquarters are Istanbul (10) and Ankara (3).

The cybersecurity sector in Turkey features a mix of established defense contractors, telecommunications firms, and IT service providers. Companies like HAVELSAN, with 3,634 employees, specialize in defense and IT software integration, including cybersecurity. TÜBİTAK BİLGEM, a national R&D center, focuses on information security and advanced electronics, while NETAŞ develops end-to-end IT infrastructure and telecom technologies, including cybersecurity solutions. Doğuş Teknoloji provides customized solutions in RPA, data analytics, AI, and cybersecurity.

A notable pattern is the strong presence of companies involved in defense and space manufacturing, such as HAVELSAN and MilSOFT Yazılım Teknolojileri A.Ş., which integrate cybersecurity into broader defense systems. Many firms, including İşNet and MİA Teknoloji, also offer a range of IT services beyond cybersecurity, indicating a diversified technology landscape.

🇹🇷 Turkey · 25 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [HAVELSAN](https://www.tamtam.ai/c/havelsan) (havelsan.com)<br>Defense and information technology software integrator specializing in command systems, war management, simulation, autonomous platforms, cyber security, homeland security and e-government technologies. | Defense and Space Manufacturing | 🇹🇷 Çankaya | 3,634 | 1982 |
| 2 | [TÜBİTAK BİLGEM](https://www.tamtam.ai/c/tubitak-bilgem) (en.bilgem.tubitak.gov.tr)<br>A national R&D center specializing in information security, advanced electronics, and IT technologies through strategic partnerships, developing high-value technologies and products for competitiveness | Research Services | 🇹🇷 Gebze | 2,230 | 2010 |
| 3 | [NETAŞ](https://www.tamtam.ai/c/netas) (netas.com.tr)<br>Develops end-to-end IT infrastructure and telecom technologies including cloud computing, 5G equipment, cybersecurity, and smart mobile devices for diverse sectors. | Telecommunications | 🇹🇷 Istanbul | 1,008 | 1967 |
| 4 | [Deloitte Turkey](https://www.tamtam.ai/c/deloitte-turkey) (deloitte.com.tr)<br>The company provides audit, consulting, financial advisory, risk management, tax services to public and private clients across various industries globally | Management Consulting | 🇹🇷 Istanbul | 978 |  |
| 5 | [Doğuş Teknoloji](https://www.tamtam.ai/c/dogus-teknoloji) (d-teknoloji.com.tr)<br>A technology company providing customized solutions in various sectors, specializing in RPA, data analytics, AI, cybersecurity, and sustainable practices with a focus on innovation and talent development | IT Services and IT Consulting | 🇹🇷 Maslak | 667 | 2012 |
| 6 | [ATP](https://www.tamtam.ai/c/atp) (atptech.com)<br>A global IT solutions provider specializing in trading software, restaurant management, digital transformation, sustainable energy products, venture capital, and technology investments | Software Development | 🇹🇷 Istanbul | 580 | 1997 |
| 7 | [TÜBİTAK BİLGEM](https://www.tamtam.ai/c/tubitak-bilgem-izmit) (gov.tr)<br>Advanced research center specializing in informatics and information security, dedicated to enhancing knowledge and innovation in the field | Defense and Space Manufacturing | 🇹🇷 Kocaeli | 554 |  |
| 8 | [Mikrolink](https://www.tamtam.ai/c/mikrolink) (mikrolink.com.tr)<br>A global telecom system integrator and supplier offering end-to-end Data Centre solutions, IT Digital Technologies, telecom projects, and fiber optic connectivity components | Telecommunications | 🇹🇷 Istanbul | 553 | 2000 |
| 9 | [Kontrolmatik Technologies](https://www.tamtam.ai/c/kontrolmatik-technologies) (kontrolmatik.com)<br>Provider of comprehensive solutions and services in LV/MV/HV, SCADA, automation, cybersecurity, and IoT for the energy, transportation, industrial, and mining sectors | Technology, Information and Internet | 🇹🇷 Sariyer | 492 | 2008 |
| 10 | [İşNet](https://www.tamtam.ai/c/isnet) (isnet.net.tr)<br>Aiming to be a leader in digital transformation, the business offers services such as robotic process automation, IoT, cyber security, and artificial intelligence | IT Services and IT Consulting | 🇹🇷 Istanbul | 347 | 1999 |
| 11 | [Gentel Telekomünikasyon A.Ş.](https://www.tamtam.ai/c/gentel-telekomunikasyon-a-s) (gentel.com.tr)<br>A telecommunication service provider offering high-quality, cost-effective solutions, with expertise in certifications for leading technology brands and turnkey project management | IT Services and IT Consulting | 🇹🇷 Umraniye | 334 | 2006 |
| 12 | [ONUR](https://www.tamtam.ai/c/onur) (onur.net)<br>Specializing in voice/data communication systems for defense and civilian sectors, with expertise in VCS, VRS, CNS & ATM systems integration | Aviation and Aerospace Component Manufacturing | 🇹🇷 Ankara | 251 | 1980 |
| 13 | [MilSOFT Yazılım Teknolojileri A.Ş.](https://www.tamtam.ai/c/milsoft-yaz-l-m-teknolojileri-a-s) (milsoft.com.tr)<br>Specializes in System Integration and Software Development, with expertise in C4I, Tactical Data Links, Cyber Security, and providing solutions to global defense markets | Defense and Space Manufacturing | 🇹🇷 Ankara | 229 | 1998 |
| 14 | [ParamTECH](https://www.tamtam.ai/c/paramtech) (paramtech.com.tr)<br>Specializing in fintech, the technology team offers infrastructure services in various areas including digital wallets, AI, fraud prevention, and credit systems | Software Development | 🇹🇷 Istanbul | 209 |  |
| 15 | [MİA Teknoloji](https://www.tamtam.ai/c/mia-teknoloji) (miateknoloji.com)<br>Develops tailored security, defense, authentication, health IT, smart transportation, sustainable energy, metaverse, and cybersecurity solutions with R&D and on-site support. | IT Services and IT Consulting | 🇹🇷 Gölbaşı | 99 | 2006 |
| 16 | [Platin Bilişim](https://www.tamtam.ai/c/platin-bilisim) (platinbilisim.com.tr)<br>Specializing in cybersecurity solutions with over 20 years of experience, providing services in digital security, data protection, and IT consultancy for various industries | IT Services and IT Consulting | 🇹🇷 Istanbul | 87 | 2001 |
| 17 | [ArkSigner](https://www.tamtam.ai/c/arksigner) (arksigner.com)<br>Provides secure digital identity verification, electronic signatures, and blockchain-based solutions for various sectors using mobile devices. | IT Services and IT Consulting | 🇹🇷 Ankara | 71 | 2015 |
| 18 | [Soitron Türkiye](https://www.tamtam.ai/c/soitron-turkiye) (soitron.com.tr)<br>Cybersecurity integrator specializing in network and IT security services, offering tailor-made solutions through leading technologies and partnerships with world-renowned vendors | Computer and Network Security | 🇹🇷 Istanbul | 64 | 2013 |
| 19 | [PURE7](https://www.tamtam.ai/c/pure7) (pure7.com.tr)<br>A technology company specializing in digital solutions, advanced security, performance, and integration, with a focus on investing in young talents and innovation | Technology, Information and Internet | 🇹🇷 Istanbul | 49 | 2024 |
| 20 | [Secure Future Bilgi Teknolojileri](https://www.tamtam.ai/c/secure-future-bilgi-teknolojileri) (securefuture.com.tr)<br>Specializing in cyber security solutions and services, the company builds a secure future through technology and innovation for global businesses in various industries | IT Services and IT Consulting | 🇹🇷 Şişli | 42 | 2017 |
| 21 | [Kron Technologies](https://www.tamtam.ai/c/kron-technologies) (krontech.com)<br>Krontech provides innovative solutions for digital transformation in infrastructure, operations, and security worldwide, with a focus on high technology and quality products | IT Services and IT Consulting | 🇹🇷 Istanbul | 41 | 2007 |
| 22 | [Techsign](https://www.tamtam.ai/c/techsign) (techsign.com.tr)<br>Provider of cutting-edge internet identity verification solutions, ensuring legal compliance, security, and instant verification for businesses and users | Software Development | 🇹🇷 Sanayi | 30 | 2016 |
| 23 | [Qubitrium](https://www.tamtam.ai/c/qubitrium) (qubitrium.tech)<br>The company specializes in developing advanced quantum technologies for cryptography, communication, and sensing, offering products and services to industrial organizations | Research Services | 🇹🇷 Cekmekoy | 20 | 2020 |
| 24 | [Opinnate](https://www.tamtam.ai/c/opinnate) (opinnate.com)<br>Opinnate provides an innovative automation technology for holistic security policy management, analysis, optimization, and change operations with an end-to-end customer experience | Computer and Network Security | 🇹🇷 Istanbul | 18 | 2022 |
| 25 | [Protec](https://www.tamtam.ai/c/protec) (protecsolutions.ai)<br>Specializing in fraud prevention, our company offers innovative solutions to protect organizations from financial losses and preserve their security | IT Services and IT Consulting | 🇹🇷 Istanbul | 2 | 2023 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

## More company lists in Turkey

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## The same list elsewhere

- [Cybersecurity companies in the world](https://www.tamtam.ai/l/cybersecurity-companies-in-the-world) (3,776)
- [Cybersecurity companies in the Middle East](https://www.tamtam.ai/l/cybersecurity-companies-in-the-middle-east) (97)

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Source: https://www.tamtam.ai/l/cybersecurity-companies-turkey