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Incident

Puget Sound Educational Service District

Incident posture

Attack window
Jul 2019
Location
United States of America
Status
Historical
CIA posture
Available to members
Updated
2025-11-03 00:00

Linked entities

Victim
Puget Sound Educational Service District
Threat actors
0 actors
Sources
1 source

Timeline

Occurred
Jul 2019
Discovered
Pending
Disclosed
Pending
Resolved
Pending

Summary

Puget Sound Educational Service District experienced unauthorized network access prompting an investigation which revealed potential exposure of personal information belonging to current and former students and employees across King and Pierce County Schools. The organization responded by isolating affected systems and engaging forensic experts, but faced criticism for significant delays in notifying impacted individuals about the compromise of sensitive data.

Motives

Detailed motive labels are available to members.

1 motive

TTPs

Detailed technique labels are available to members.

1 technique

Description

On or around July 25, 2019, the Puget Sound Educational Service District (PSESD) detected unusual activity within its computer network. The organization, which provides services to King and Pierce County schools in Washington State, responded by taking a portion of its network offline to contain potential threats. PSESD engaged computer forensic specialists to investigate the incident's scope and determine whether unauthorized access to sensitive information had occurred. The forensic investigation confirmed that the network intrusion constituted a data breach affecting current and former students and employees associated with the educational service district. Personal information maintained by PSESD was potentially compromised during the security incident, though specific details about data types or quantities were not publicly disclosed in available reports.

PSESD initiated breach notifications to affected individuals approximately nine months after the initial detection, with public reports emerging in April 2020. The delayed disclosure timeline drew criticism from external observers who questioned the prolonged interval between incident discovery and stakeholder notification. The organization's response included standard breach remediation measures such as network segmentation and forensic analysis, but no additional mitigation strategies or security enhancements were detailed in public statements. The incident exposed educational community members to potential identity theft risks due to the compromise of personal data. No information was released regarding whether the attackers established persistent access, made specific data exfiltration demands, or whether law enforcement investigations yielded actionable leads.

Sources

Sources available to members: 1 source.

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