Cass Balzer writes: “Worldwide, more than 15 million cyberattacks have been reported every year since 2020. At public institutions like libraries, these attacks often shut down core systems, compromise personal information of patrons and staff, and leave communities without access to certain services, all while demanding substantial resources to repair the damage. For libraries that have suffered these attacks, recovery was long, complicated, and costly, but their experiences offer lessons in how libraries can respond and rebuild.”