Seattle-Tacoma International Airport has been experiencing significant disruptions due to a possible cyberattack that began on Saturday. The Port of Seattle, which manages the airport, reported internet and web systems outages affecting various services, including phone and email systems. The outages have led to delays and cancellations of flights, impacting thousands of travelers. The Port of Seattle has isolated critical systems and is working with federal partners to investigate the unauthorized activity. As of Monday, the airport continued to face outages for the third day, with some systems, including baggage sorting, still offline. There is no timeline for full restoration of services.