A cyberattack has disrupted Seattle-Tacoma International Airport (Sea-Tac) since Saturday, affecting websites, email, phones, Wi-Fi, and terminal screens. Authorities have shared few details, only citing “nefarious characters” as a possible cause, with no known motive or timeline for resolution. Federal agencies, including the FBI and Homeland Security, are involved in the ongoing investigation. The airport shut down its systems to prevent further damage. Some airlines, like Alaska Airlines, resorted to manually sorting thousands of bags, while others, including Delta, reported minimal impact. Airlines using shared airport software had to issue handwritten boarding passes, prompting the airport to advise travelers to arrive early, pack light, and print boarding passes in advance. Despite the disruption, flights continue to operate and security processes remain unaffected, aided by increased TSA staffing.