Türkiye's
Trusted
Cybersecurity
Partner
Since 2003, we have delivered TSE-certified penetration testing and information security services across Türkiye's most sensitive systems — from government agencies to the defense industry, from finance to telecommunications.
Kurumsal
Who We Are
NESİL Teknoloji A.Ş., founded in Ankara in 2003, is one of Türkiye's leading cybersecurity and information security management firms. We serve a broad client portfolio spanning government, defense, finance, and telecommunications.
Accredited by the Turkish Standards Institution (TSE) as a Class A Penetration Testing Firm , NESİL Teknoloji is among the select firms eligible to bid on public-sector contracts in Türkiye. With ISO 27001, ISO 27701, ISO 20000, and ISO 22301 certifications documenting our corporate reliability to international standards, we deliver end-to-end solutions to our clients.
We serve clients across Türkiye from our offices in Ankara (Çankaya), Istanbul (Esenler), İzmir (Karabağlar), and Antalya (Muratpaşa).
Akreditasyon
TSE Class A Penetration Testing Certificate
The highest level of penetration testing accreditation in Türkiye, held by only a select group of firms.
Certificate Information
Belge No: TSE-STF-065
Standart: TS 13638 / T2
Class: Class A Authorization
NESİL Teknoloji is accredited by TSE under the TS 13638/T2 standard as a Class A Penetration Testing Firm . This certification covers the authority to deliver penetration testing services to government agencies, municipalities, critical infrastructure operators, and defense industry organizations.
Class A authorization is TSE's highest assessment category for technical competence, methodological rigor, and corporate reliability. Where public tenders require a TSE-certified penetration testing firm , NESİL Teknoloji is among the authorized providers.
Penetrasyon testlerimiz OWASP, PTES and OSSTMM methodologies govern every engagement. Each finding is reported with a CVSS v3.1 score and PoC evidence.
Why NESİL
What Sets Us Apart
TSE Class A Authorization
One of the accredited firms eligible to serve where public tenders legally require it.
Certified Team
Ethical hackers holding CEH, OSCP, CISSP, and CISA certifications. Technical skill proven in the field.
CVSS Reporting
Every finding is reported with a CVSS v3.1 score, exploit evidence, and a prioritization matrix.
End-to-End Process
From testing to remediation, compliance to ISO certification — managed under one roof.
Etkinlikler
Recent Events
Highlights from conferences, partnerships, and industry events.
Data Protection Authority Conference
An industry gathering on personal data protection
KVKK Event
Compliance and awareness panel
Turkcell Partnership
Strategic cybersecurity partnership
TED Event
Digital transformation and cybersecurity
Industry Talk
Cybersecurity and data protection
Industries
Industries We Serve
Cybersecurity services for 1,200+ enterprise clients across 40+ industries.
Documents
Corporate Documents
Learn more about the NESİL Teknoloji service portfolio.