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Pierce County Library System

Pierce County Library System Vendor Cyber Rating & Cyber Score

mypcls.org
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ISO 27001
SOC 2 Type 1
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The nationally acclaimed Pierce County Library System serves 680,000 people throughout Pierce County with 19 libraries and online services. The system is the fourth largest in the state and is funded primarily through property taxes. People may choose from more than one million books, movies and other materials, as well as nearly half a million online/downloadable materials. The Library provides services and programs directly to people in adult care facilities or who are homebound, and to children in child care centers and schools. Pierce County Libraries are located at Anderson Island, Bonney Lake, Buckley, DuPont, Eatonville, Fife, Gig Harbor, Graham, Key Center, Lakewood, Milton/Edgewood, Orting, Parkland/Spanaway, Pierce County


PCLS A.I CyberSecurity Scoring

Incident Details
PCLS
Company Information
Website:http://mypcls.org
Employees number:247
Number of followers:1,497
NAICS:51912
Industry Type:Libraries
Homepage:mypcls.org
Cyber Premium EstimationGet Supply Chain
PCLS Risk Score (AI oriented)
Between 650 and 699
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PCLSLibraries
Updated:
03/04/2026
692/1000
Weak
B
AaaAaABaaBaBCaaCaC
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PCLS Global Score (TPRM)
xxxx
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PCLSLibraries
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Score locked
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Vulnerabilities
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Findings

PCLSWeak
Current Score
692B (WEAK)
01000
1 incidents
0 avg impact
Incident timeline with MITRE ATT&CK tactics, techniques, and mitigations.
SEPTEMBER 2026
698Before Incident
AUGUST 2026
697Before Incident
JULY 2026
696Before Incident
JUNE 2026
695Before Incident
MAY 2026
693Before Incident
APRIL 2026
693Before Incident
MARCH 2026
692Before Incident
FEBRUARY 2026
690Before Incident
JANUARY 2026
689Before Incident
DECEMBER 2025
687Before Incident
NOVEMBER 2025
687Before Incident
OCTOBER 2025
685Before Incident
APRIL 2025
756Before Incident
Breach
15 Apr 2025 • PCLS
Pierce County Library System (PCLS)

Pierce County Library System Data Breach (2024)

676After Incident
CRITICAL-80
PIE2932129090925
The Pierce County Library System (PCLS) experienced a data breach between April 15–21, where unauthorized actors accessed and exfiltrated files containing personal details (names and dates of birth) of over 335,000 individuals. While the library claimed no evidence of misuse, plaintiffs reported increased spam calls, texts, and emails soliciting personal data, along with fraudulent credit checks and compromised debit cards. The breach led to a class-action lawsuit alleging negligence in security measures, with plaintiffs seeking damages and mandatory system improvements. PCLS offered one year of free credit monitoring, but critics deemed this insufficient. The incident highlights risks of identity theft and long-term fraud from exposed sensitive data, even when limited in scope. The library, Washington’s fourth-largest system, faces reputational harm and potential financial liabilities, with similar local breaches (e.g., Pierce College, Virginia Mason) resulting in multimillion-dollar settlements.
INCIDENT DETAILS -
TYPE
Data BreachUnauthorized AccessExfiltration
MOTIVATION
Data TheftPotential Financial GainIdentity Fraud
IMPACT
NamesDates of BirthIncreased spam calls/texts/emailsDebit card fraud alertsUnauthorized credit checksClass-action lawsuitPublic distrustMedia coverageClass-action lawsuit (filed 2024-09-03)Allegations of negligencePotential damages and security mandatesHigh (combined with publicly available data)Long-term monitoring requiredIndirect (via linked fraud attempts)
DATA BREACH
Personally Identifiable Information (PII)Number Of Records Exposed: 335,868Sensitivity Of Data: Moderate-High (when combined with other public data)Data Exfiltration: Yes (files copied and taken)Full NamesDates of Birth
REFERENCES
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Pierce County Library System Cyber Scoring History | Rankiteo