Pierce County Library System patron and employee data breach

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Made public · 340,101 people

What leaked8

Hard to replace

  • Driver's licence number
  • Passport number
  • Bank account number
  • Other profile data

Permanent

  • Health information
  • Social Security number
  • Date of birth
  • Full name
  • Health informationmedical information; current or former employees and their family members
  • Social Security numbercurrent or former employees and their family members
  • Driver's licence numbercurrent or former employees and their family members
  • Passport numbercurrent or former employees and their family members
  • Bank account numberfinancial account information; current or former employees and their family members
  • Other profile datahealth insurance information, and credit card information · details not stated; current or former employees and their family members

To-dos6 · about 1 h 30 min in all

  1. Freeze your credit at Equifax, Experian and TransUnionabout 30 minfreeStops: credit in your name · Limits harm from: applications with your ID (opens in a new tab)
  2. Get an IRS Identity Protection PINabout 20 minStops: tax refund fraud (opens in a new tab)
  3. Place a fraud alert on your credit reportsabout 10 minfreeLimits harm from: credit in your name, applications with your ID (opens in a new tab)
  4. Check your credit reports every week, freeabout 20 minfreeHelps you notice: credit in your name, applications with your ID (opens in a new tab)
  5. Turn on instant transaction alertsabout 5 minHelps you notice: bank account fraud
  6. Freeze your NCTUE phone and utility fileabout 10 minfreeLimits harm from: phone or utility account (opens in a new tab)

What happened next7 events

Response: 4 events

Back to latest
  1. Mailed letters about the data of current and former employees and their family members, after a review that ended on 10 October 2025
  2. Sent letters to library card holders
  3. Notified the Washington attorney general; the directory lists 336,826 Washington residents and names and full dates of birth
  4. Confirmed that it was the target of a cybersecurity event and that some library data was taken; details were still under investigation · press
Company
Pierce County Library System
When it happened
–
Company detected it
Made public
Notice
Leak confirmed
Affected
340,101 people · Pierce County Library System's filing with the Maine attorney general, as SecurityWeek reports; press