A hacking group claims to have breached multiple FBI-related services and stolen data on all FBI employees and applicants, including names, home addresses, phone numbers, and information on their spouses. The breach could have significant national security and counterintelligence implications. The data could be used by criminals to track and harass FBI agents, or by foreign intelligence agencies to understand how the FBI operates. The breach's impact on the safety of FBI agents and their families is a major concern.