Teamsters Local Union No. 174, along with Local No. 117, was involved in a data breach that was discovered on June 16, 2025. This incident stemmed from a third-party cybersecurity event that unlawfully accessed union files. The breach was publicly confirmed through a settlement in a class action lawsuit and regulatory filings with the Washington State Office of the Attorney General.
The breach affected 116,026 individuals, with "Private Information" being the type of data exposed. While the specific categories of private information were not detailed in the summary, such data typically includes names, addresses, and could potentially involve financial or identification details. The incident primarily impacted individuals in Washington State.
Details about the full scope of the compromise may emerge over time, and affected individuals may experience further notifications.