Company lists · Data refreshed September 2026

Top 23 Security assessment companies based in Türkiye

RevenueBase identified 72 company matches for security assessment companies associated with Türkiye as of September 2026 and tracks 575 professional contacts across them, including 138 with verified work emails. Istanbul is the largest hub.

This list covers company matches for security assessment companies associated with Türkiye, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built
72Companies
575Contacts tracked
138Verified emails
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The 23 largest security assessment companies based in Türkiye

Ranked by team size
Top 23 of 72 company matches for security assessment companies based in Türkiye, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchIstanbul, TürkiyeHQ recorded Sep 27, 202611-5069 contacts →

Exact match

“2017 yılında bilgi güvenliği konusunda danışmanlık, servis ve destek hizmetleri vermek amacıyla kurulan Infinitum IT, siber olaylara müdahale hizmetleri, güvenli kod…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2Exact matchAnkara, TürkiyeHQ recorded Sep 27, 202611-5044 contacts →

Exact match

“BEAM Teknoloji is an Accredited Cyber Security Testing and Evaluation Laboratory established in 2011.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3Exact matchÜsküdar, TürkiyeHQ recorded Sep 27, 202611-5044 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4Exact matchİstanbul, TürkiyeHQ recorded Sep 27, 202611-5042 contacts →

Exact match

“Company Profile Lostar Inc, founded in 1998, based in Istanbul/Turkey, provides competitive edge in an uncertain world with Business and Technology Risk Consulting.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5Exact matchCumhuriyet Mah., TürkiyeHQ recorded Sep 27, 202611-5042 contacts →

Exact match

“Tetra Bilişim, yenilikçi ve önder yaklaşımı ile ülkemiz bilişim sektörüne ve bilgi güvenliğine sürekli katkı sağlamaktadır.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6Exact matchŞişli, TürkiyeHQ recorded Sep 27, 202611-5020 contacts →

Exact match

“Guided by our philosophy,"Whatever we do, there will always be Art within," CyberArts brings together cybersecurity, information security, governance, risk, compliance, law…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7Exact matchPoligon Caddesi Buyaka 3. Blok Ümraniye, TürkiyeHQ recorded Sep 27, 202611-5016 contacts →

Exact match

“GTI is an Information Security Consulting, Solutions & Training services firm, providing specialized security services.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8Exact matchIstanbul, TürkiyeHQ recorded Sep 27, 202611-5012 contacts →

Exact match

“Internal & External Penetration Tests Web & Mobil Application Security Tests CyberSecurity Consultancy Incident Response, Vulnerability Analysis, Threat Hunting”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9Exact matchİstanbul, TürkiyeHQ recorded Sep 27, 202611-5011 contacts →

Exact match

“Invento is a leading security solutions provider dedicated to empowering organizations with resilient and scalable information security frameworks.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10Exact matchŞişli, TürkiyeHQ recorded Sep 27, 20261-1010 contacts →

Exact match

“Digital Forensics and Incident Response”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11Exact matchAnkara, TürkiyeHQ recorded Sep 27, 20261-1010 contacts →

Exact match

“Sibereum Bilgi Güvenliği ve Danışmanlığı Tic.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12Exact matchIstanbul, TürkiyeHQ recorded Sep 27, 202611-509 contacts →

Exact match

“We don’t just secure systems.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13Exact matchPendik, TürkiyeHQ recorded Sep 27, 202611-508 contacts →

Exact match

“Kaynak kod analizi ve sızma testi servisleri sağlayan TSE-B sınıfı siber güvenlik şirketidir.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14Exact matchİstanbul (istanbul, TürkiyeHQ recorded Sep 27, 202611-507 contacts →

Exact match

“Siber güvenlik alanında Denetim, Danışmanlık ve Uygulama, Eğitim, Adli Bilişim konularında hizmet vermektedir.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15Exact matchZonguldak, TürkiyeHQ recorded Sep 27, 20261-107 contacts →

Exact match

“DNG Teknoloji Anonim Şirketi 2024 yılında kurulmuştur.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16Exact matchAtasehir, TürkiyeHQ recorded Sep 27, 202611-505 contacts →

Exact match

“Endpoint-labs is an award-winning pioneer in the next generation of application security solutions, rapidly becoming a widely recognized conspicuous in application security…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17Exact matchÇankaya/ankara, TürkiyeHQ recorded Sep 27, 20261-105 contacts →

Exact match

“Founded in 2008 in Ankara, BELGESERT has been continuously evolving for over 15 years with its expert team and extensive knowledge, always prioritizing customer security.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18Exact matchIstanbul, TürkiyeHQ recorded Sep 27, 20261-103 contacts →

Exact match

“G&G is an organization located in Turkey and Hungary, who is aiming to support the organizations and individuals to conduct their businesses on efficient and secure platforms.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19Exact matchKartal, TürkiyeHQ recorded Sep 27, 20261-103 contacts →

Exact match

“Kurumsal organizasyonların bilgi güvenliği risklerini sistematik biçimde yönetmelerine destek oluyoruz.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20Exact matchİstanbul, TürkiyeHQ recorded Sep 27, 202611-502 contacts →

Exact match

“16 yıllık sektör tecrübemizin getirisi doğrultusunda; Sistem ve Network Güvenliği, ITSM (HelpDesk), ManageEngine, Bilgi Güvenliği Danışmanlığı, KVKK Danışmanlığı, Penetrasyon…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21Exact matchİstanbul -levent, TürkiyeHQ recorded Sep 27, 20261-102 contacts →

Exact match

“Köklü, Tecrübeli, Profesyonel Logos Risk markasıyla yurtdışından edindiğimiz köklü tecrübemiz ve yerel piyasaya hâkim profesyonel ekibimiz ile ISO 27001 sertifikasıyla tescilli…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22Exact matchIstanbul, TürkiyeHQ recorded Sep 27, 20261-102 contacts →

Exact match

“We are focused on a single mission: to make organizations of all sizes secure from cyber threats and trust in their readiness level.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23Exact matchBursa, TürkiyeHQ recorded Sep 27, 20261-101 contacts →

Exact match

“Tekvizyon Güvenlik, istenen güvenlik sisteminin gereği olarak veya talep üzerine mekanın / kurumun ne tip tehditlere maruz kalabileciğini tespit ederek, alınacak tedbirlerin ne…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

Showing 23 of 72 security assessment companies based in Türkiye

See the full list, filter by size, metro and specialty, and access 138 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Security assessment companies based in Türkiye at a glance

As of Sep 27, 2026
24.0%Verified-email coverage
8.0Average contacts per company
11-50Median size (employees)
37.5%Largest-city concentration · Istanbul
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
31
11-50
37
51-200
3
1,001-5,000
1

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 72 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with Türkiye whose business descriptions match “security assessment companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 138 professional contacts with verified work emails across the full matched dataset. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “security assessment companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many security assessment companies are there based in Türkiye?

RevenueBase identified 72 company matches for security assessment companies associated with Türkiye as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Infinitumit tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most security assessment companies?

Istanbul leads with 27 company records, followed by Ankara (6) and Sariyer (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 138 professional contacts with verified work emails tracked across these 72 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 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.