AccidentalEducationEducationMisconfigurationDelayed DiscoveryEmployee Data InvolvedFinancial accountIdentity (basic)Government IDPIIHighContained

Centralia College

bd_72085403b2a948a8 · schema v1 · pii pii-v1

Severity

High

Discovered

Aug 4, 2023

Filed

Sep 2, 2023

To disclose

29 days

Affected

11,459state residents only

Confidence

70%

Full breach record for Centralia College →2 incidents on file

Centralia College notified Washington AG of an internal data breach affecting 11,459 employees. Data was inadvertently exposed on an intranet system from March 2022 to August 2023 following a ransomware attack and subsequent SharePoint migration. Exposed data included SSNs and financial information. The college provided credit monitoring services.

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Leak gap clock✗ Leak >180d29 days discovery → filing

Incident timeline

undetected · 500 days

discovery → filing · 29 days

Mar 22, 2022

Begins

Aug 4, 2023

Discovered

Sep 2, 2023

Filed

vs. sector median

6 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed11,459 affectedView incident

Name: Centralia College
norm: centralia college
Domain: centralia.edu

Name: Centralia College
norm: centralia college
Domain: centralia.edu
Industry: Educationllm

Discovered: Aug 4, 2023
Breach occurred: Mar 22, 2022 – Aug 4, 2023
Undetected for: 500 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 2, 2023
Affected individuals: 11,459state-resident count only
Data types: PIIGovernment IDFinancial account
Data elements: NameSocial Security number
WA-stated cause: Unauthorized Access
WA-stated duration: lifecycle 500+dexposure 500+d
WA-stated discovery: Found while ongoing
Attack vector: Misconfiguration
MITRE ATT&CK: T1074 Data StagedT1119 Automated Collection
Threat actor: Internal
Regulator citations: Notified Washington State Attorney General in accordance with RCW 42.56.590
Initial access: insider_action

During the incident: Information Technology Services department promptly investigated the matter
The data has since been secured
Providing credit monitoring services to those whose data was affected
Access to the data has been restored only to those employees who are normally authorized to see it
Changes made: Implementing measures to prevent such incidents in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 29 days(29 days from discovery to filing)
Compliance flags: Leak >180dWA AG ≤30d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA26405.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 2, 2023
Raw hash: c79356f831eace9c9fa3118ab96d7739c613ef43ed622589ef02e7596b1801cc

Reporting entityCentralia College

Victim entityCentralia College

Incidentdiscovered Aug 4, 2023

Stated responseInformation Technology Services department promptly investigated the matter

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com