Mehmet Göktürk

A Systematic Approach to Measure Usability and Security Trade-off

2024

Designing usable and secure interfaces has become a necessity in today's complicated structure of web applications. The widespread belief about the relation of these subjects is that there is a trade-off between them, and to …

BI-GBDT: A Graph-Free Behavioral Interaction-Aware Gradient Boosting Framework for Fraud Detection in Large-Scale Payment Systems

2026 · Applied Sciences

Detecting fraudulent and anomalous transactions in large-scale digital payment systems is significantly challenging due to severe class imbalance and the fact that transactional risk is tightly coupled to the historical interactions and behaviors of transacting …