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Pierce County Library System Data Breach Affects 340,000 Individuals

Pierce County Library System Data Breach Affects 340,000 Individuals

First seen 15 Dec 2025, 12:49 UTC • •

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ThreatCluster AI
ThreatCluster •March 12, 2026 at 13:27 UTC

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 protection and credit monitoring services through IDX to those affected.

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