Quantum computers will likely one day be capable of breaking the encryptions that protect public data, including Social Security numbers, health care information, as well as access to public safety and emergency service systems. That day — known as Q-Day — could come as soon as 2029. The Howard Center for Investigative Journalism at Arizona State University and Scripps News found that, as the federal government invests billions into developing quantum computers in a race against global rivals, the majority of U.S. states have not begun preparing to transition their systems to the new post-quantum cryptographies that can withstand a quantum attack.