PeerJ Author 0 Points Jungsuk Kim PeerJ Author Summary Data Mining & Machine Learning Emerging Technologies Natural Language & Speech PeerJ Contributions Articles 2 January 23, 2025 Blockchain enabled policy-based access control mechanism to restrict unauthorized access to electronic health records Nadeem Yaqub, Jianbiao Zhang, Muhammad Irfan Khalid, Weiru Wang, Markus Helfert, Mansoor Ahmed, Jungsuk Kim https://doi.org/10.7717/peerj-cs.2647 March 15, 2024 Blockchain based general data protection regulation compliant data breach detection system Kainat Ansar, Mansoor Ahmed, Saif Ur Rehman Malik, Markus Helfert, Jungsuk Kim https://doi.org/10.7717/peerj-cs.1882