TSE A-Class · CREST-approved

Turkey’s Leading Penetration Testing Company

TSE A-Class and CREST-approved penetration testing, plus NIST SP 800, CMMC and GDPR compliance for regulated organizations. 400+ corporate clients across finance, public sector, healthcare and defense.

Penetration TestingNIST SP 800CMMCGDPRISO 27001
What we do

Penetration testing and compliance for NIST, CMMC and GDPR

Pick a single engagement or combine them. Each one ends with a clear report, prioritized fixes and an audit-ready evidence pack.

Penetration Testing

TSE A-Class and CREST-approved offensive testing that finds real, exploitable risk — not just scanner noise.

  • Network, web, mobile, API and cloud
  • Manual exploitation and retest included
  • Executive and technical reporting
  • Aligned with BDDK, SPK and TCMB

NIST SP 800

Implement the right NIST framework for your data without drowning in a thousand controls.

  • SP 800-53 control catalog
  • SP 800-171 for CUI protection
  • Gap assessment and POA&M
  • Control implementation support

CMMC Certification

Get defense-supply-chain ready for CMMC Level 1 and Level 2 before your C3PAO assessment.

  • Readiness and gap assessment
  • Level 1 and Level 2 practices
  • Remediation roadmap
  • Evidence and documentation pack

GDPR Compliance

Demonstrate lawful, secure processing of EU personal data to regulators and customers.

  • Data mapping and RoPA
  • DPIA and risk assessment
  • Policies, DPA and breach process
  • Ongoing compliance support
Why Nesil

Accreditation that auditors recognize

TSE A-ClassCertified penetration testing provider (TS 13638/T2, No: TSE-STF-065).
CREST memberInternationally recognized testing standards and ethics.
ISO 27001We run our own ISMS — and help you build yours.
Regulation-readyBDDK, SPK, TCMB, NIST, CMMC and GDPR under one roof.
How it works

From kickoff to certificate in four steps

ScopeWe define assets, frameworks and goals in a short discovery call.
AssessPentest and/or gap analysis against NIST, CMMC or GDPR.
RemediatePrioritized fixes with hands-on support from our expert team.
CertifyRetest, evidence pack and audit-ready documentation.
FAQ

Questions we hear most

What is the difference between NIST SP 800-53 and SP 800-171?

SP 800-53 is the full control catalog for federal information systems, while SP 800-171 is the subset that protects Controlled Unclassified Information (CUI) in non-federal systems. We help you scope the right framework and close the gaps.

Do you provide CMMC readiness for non-US companies?

Yes. We assess your environment against CMMC Level 1 and Level 2 practices, remediate gaps and prepare you for a C3PAO assessment, regardless of location.

Are your penetration tests accepted by regulators?

Our pentests are delivered by a TSE A-Class and CREST-approved team and align with regulatory expectations including BDDK, SPK and TCMB, plus international frameworks.

Can you combine GDPR and pentest in one engagement?

Yes. We frequently run GDPR data-protection compliance alongside technical penetration testing so organizational and technical safeguards are validated together.

Get started

Tell us what you need to prove — and to whom

NIST, CMMC, GDPR or a pentest. We will scope it on a 30-minute call and send a fixed quote.

[email protected] +90 216 232 24 33