TR
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Nesil Group Technology Inc. provides end-to-end cybersecurity and information security management services to critical sectors, primarily public institutions, the defense industry, finance and telecommunications.
In the field of offensive security, we lead the industry in Red Team operations with our TSE Class A and internationally valid certifications.
With our national R&D vision, our strong engineering team and our globally standard capabilities, we raise the cyber resilience of organizations to the highest level.
Türkiye's Trusted Penetration Testing Company
Since 2003, we have provided TSE-approved penetration testing and information security services for Türkiye's most sensitive systems, from public institutions and the defense industry to the finance and telecommunications sectors.
TSE Class A Penetration Testing Certificate
The highest-level penetration testing accreditation in Türkiye, held by only a select number of companies.
- Document No
- TSE-STF-065
- Standard
- TS 13638 / T2
- Class
- Class A Authorization
Approved by the Turkish Standards Institution
NESİL Teknoloji has been accredited by TSE as a Class A Penetration Testing Company under the TS 13638/T2 standard. This certificate covers the authorization to provide penetration testing services to public institutions, municipalities, critical infrastructure operators and defense industry organizations.
Class A authorization is TSE's highest evaluation category in terms of technical competence, methodology compliance and corporate reliability. In public tenders where a TSE-approved penetration testing company is required, NESİL Teknoloji is among the authorized companies.
Our penetration tests are carried out in accordance with the OWASP, PTES and OSSTMM methodologies. Every finding is reported with a CVSS v3.1 / v4.0 score and PoC evidence.
You can review our Certifications & Competencies page for all our documents and credentials, including our Ministry penetration testing authorization certificate (STB03-250), our CREST membership and our TÜRKAK-accredited ISO 27001 / ISO 27701 certificates.
Our Strengths That Set Us Apart
TSE Class A Authorization
TSE's highest class under TS 13638/T2.
We are one of the few companies that meet the legal requirement in public, defense and critical infrastructure tenders.
Certified Team
OSCP, OSEP, CREST, CISSP and CISA certified; 9 TSE-certified penetration testing experts.
Not automated scanner output, but manually verified findings.
CVSS v4.0 Reporting
Findings are scored with both CVSS v3.1 and v4.0; they are delivered with exploit evidence, business impact and a prioritization matrix.
End-to-End Process
We do not leave a report and walk away: remediation support, retesting and ISO 27001 / KVKK compliance under one roof.
Industries We Serve
Cybersecurity services for 400+ corporate clients across 40+ different industries.