Hamilton Bean is a professor in the Department of Communication at the University of Colorado Denver. He has taught courses at the International College Beijing and served as a guest researcher (2018, 2024) and visiting professor (2021) at Kyoto University’s Disaster Prevention Research Institute. He specializes in the study of communication and security with an emphasis on mobile public alert and warning systems and messages. He was part of a U.S. Department of Homeland Security-funded research team that investigated the optimization of Wireless Emergency Alert (WEA) messages for imminent threats. He has consulted for international, federal, and state agencies, as well as contributed to U.S. Federal Communications Commission rulemaking concerning the WEA system. He has earned research funding from the U.S. Federal Emergency Management Agency, the U.S. National Oceanic and Atmospheric Administration, and the Japan Foundation to study mobile public alert and warning systems and messages. He is the associate editor for Natural Hazards Review and the Journal of Integrated Disaster Risk Management. He is also an editorial board member for Communication Law Review, Intelligence and National Security, Secrecy and Society, Rhetoric and Public Affairs, and Management Communication Quarterly. His research has been published in numerous international academic journals and edited volumes. His book, Mobile Technology and the Transformation of Public Alert and Warning (Praeger Security International, 2019), won the 2021 Sue DeWine Distinguished Scholarly Book Award from the Applied Communication Division of the National Communication Association.