AC

Strong Customer Authentication and 3D Secure 2: User Experience vs Security

TL;DR

BDDK + AB PSD2 ile uyum; 3DS2 + biyometrik doğrulama + risk-tabanlı muafiyet.

16 Şubat 2026 Financial Law 1 dk okuma 15 görüntülenme Son güncelleme: 10 Mayıs 2026

Dual factor authentication + risk-based exemption UX + security balance with 3DS2.

SCA requirements

  • Two independent factors (information + ownership + biometrics).
  • Low amount exemption (30 EUR / transaction).
  • Cumulative exemption limit.

3DS2 architecture

  • Frictionless flow: 95% smooth operation.
  • Challenge flow: high risk.
  • SDK + browser flow.

Risk management

  • Behavioral analytics.
  • Device fingerprinting.
  • Geographic anomaly.

Frequently asked

If Frictionless percentage is low?

Risk score improvement + 3DS2 SDK update.

Biometric data KVKK?

Special qualifications; Explicit consent + strict retention.

How about low failure rate?

Consumer education + UX improvement + bank selection.

Relevant legislation

  • Law No. 6493 — Payment & electronic money; licensing, operating permit.
  • BRSA Regulations — Payment institution / EML permission, capital, reporting.
  • 5549 SKMASAK; KYC, STR, regular activity.
  • KVKK + GDPR — Data security, cross-border transfer.
  • PCI-DSS — Card storage; PCI level 1-4 compliance.
Legal notice: This article is for general information purposes; A meeting with a lawyer is required for a concrete case.

Kaynaklar ve referanslar

Kaynaklar

Strong Customer Authentication ve 3D Secure 2: Kullanıcı Deneyimi vs Güvenlik içeriği hazırlanırken resmi mevzuat ve yüksek yargı kaynakları esas alınmıştır.

Telif bildirimi This content and all related Q&A texts are protected under Turkish Copyright Law No. 5846. Unauthorized copying, reproduction, publication, adaptation, bulk extraction, or commercial use is prohibited; legal and criminal remedies are reserved in case of infringement.

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