Pierce County Library System is a organization tracked across 2 threat clusters and 3 intelligence report mentions on ThreatCluster. First observed December 15, 2025; most recent activity December 16, 2025.
A cyberattack on the Pierce County Library System in Washington exposed the personal information of over 340,000 individuals. The breach, which occurred between April 15 and 21, 2025, involved unauthorized access to the…
In April 2025, hackers compromised the personal information of over 340,000 patrons, employees, and their family members of the Pierce County Library System. The library has offered one year of complimentary identity…