SEATTLE, WA –  The Port of Seattle has revealed that some 90,000 people were impacted by August’s cyberattack on the Seattle-Tacoma International Airport. In its investigation, the Port found that approximately 71,000 of those affected live in Washington state.

The people behind the cyberattack downloaded personal information from Port networks, the majority of which come from current and former Port and other airport employees and contractors.

The personal information that was downloaded in the cyberattack includes combinations of names, dates of birth, at least the last four digits of Social Security numbers, driver’s license or other government identification card numbers, and some medical information, according to a news release from the Port.

The cyberattack occurred on Aug. 24, 2024. On that day, the Port  became aware of unauthorized activity on its system. Soon after, the Seattle-Tacoma International Airport requested travelers avoid checking their luggage.

At the time, Seattle-Tacoma International Airport officials said the cyberattack impacted internet access to some of the airport systems, impacting the ability to send and receive data, including emails.

The incident did not affect the ability to travel to or from the airport or use the Port’s maritime facilities.

The systems of major airlines, cruise partners and federal partners like the Federal Aviation Administration, Transportation Security Administration, and U.S. Customs and Border Protection were not affected.

For the 90,000 affected people, the Port sent notices via mail that includes information on how to access free credit monitoring services from the Port.

Source: Spencer Pauley, The Center Square, “Last year’s cyberattack on Seattle airport stole personal info from 90,000 people” April 3, 2025.