Block-VC: A Blockchain-Based Global Vaccination Certification. - Alkhansaa A. Abuhashim; Hassan A. Shafei; Chiu C. Tan 001 (Blockchain, 2021)

Do smart speaker skills support diverse audiences? - Hassan A. Shafei; Chiu C. Tan 001 (Pervasive Mob. Comput., 2022)

A Closer Look at Access Control in Multi-User Voice Systems. - Hassan A. Shafei; Chiu C. Tan 001 (IEEE Access, 2024)

Measuring privacy policy compliance in the Alexa ecosystem: In-depth analysis. - Hassan A. Shafei; Hongchang Gao; Chiu C. Tan 001 (Comput. Secur., 2024)

Enhancing Alexa Skill Testing Through Improved Utterance Discovery. - Hassan A. Shafei; Chiu C. Tan 001 (ACM Trans. Internet Techn., 2024)

Safety and Public Protection: Predicting and Analyzing Incidents with Large Language Model-Based Zigzag Graph Neural Networks. - Hassan A. Shafei; Yang Zhao; Christian Martin; Javad M. Alizadeh; Karin M. Eyrich-Garg; Omar Martinez; Ying Ding; Chiu C. Tan 001; Huanmei Wu; Yuzhou Chen (PAKDD (2), 2025)