MalwareEducationEducationRansomwareData ExfiltratedData EncryptedCustomer Data InvolvedHealth (basic)Identity (basic)Government IDPHIHighContained

Bastyr University

bd_1c7b47783656fea7 · schema v1 · pii pii-v1

Severity

High

Discovered

Apr 30, 2025

Filed

Sep 17, 2025

To disclose

20 weeks

Affected

2,676state residents only

Linked

5 filings

Confidence

71%

Full breach record for Bastyr University →

Bastyr University experienced a ransomware incident between April 23 and April 30, 2025, discovered on April 30, 2025. Unauthorized access affected names, SSNs, DOBs, and diagnosis info. 2,676 Washington residents were notified on September 17, 2025. The university engaged forensic specialists, notified law enforcement, and provided 12 months of credit monitoring.

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Washington clock✗ WA AG >90d20 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 7 days

discovery → filing · 20 weeks / 140 days

Apr 23, 2025

Begins

Apr 30, 2025

Discovered

Sep 17, 2025

Filed

vs. sector median

+10 wks slower

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Indiana State AGbd_765ee33dc60d6c282025-09-17Verified
Massachusetts State AGbd_94c36b4fde444fa22025-09-17Verified
Maine State AGbd_cb6ba0f751c9ad352025-09-17Verified
Vermont State AGbd_dd645b52d1ef89172025-09-17Verified

Name: Bastyr University
norm: bastyr university
Domain: bastyr.edu

Name: Bastyr University
norm: bastyr university
Domain: bastyr.edu
Industry: Educationllm

Discovered: Apr 30, 2025
Breach occurred: Apr 23, 2025 – Apr 30, 2025
Undetected for: 7 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 17, 2025
Affected individuals: 2,676state-resident count only
Data types: Identity (basic)Government IDHealth (basic)
Data elements: NameSocial Security numberDate of birthMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoingContained same day
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: providing written notice of this incident to relevant state and federal regulators

During the incident: Launched an investigation with the assistance of third-party specialists
Notified law enforcement regarding the event
Providing access to credit monitoring services for twelve (12) months, through Epiq, to individuals whose personal information was potentially affected by this incident, at no cost to these individuals
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Providing written notice of this incident to relevant state and federal regulators, as necessary, and to the three major credit reporting agencies, Equifax, Experian, and TransUnion
Changes made: Working to implement additional safeguards and training to its employees
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 20 weeks(140 days from discovery to filing)
Compliance flags: WA AG >90d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Indiana State AGSep 17 · first

Massachusetts State AGSep 17 · first

Maine State AGSep 17 · first

Vermont State AGSep 17 · first

Washington State AGSep 17 · first · this page

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/BreachA34688.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 17, 2025
Raw hash: 1e228168928b23f25cce86bbed91bffbae88a1e3a3e03b03aeca33b531460621

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityBastyr University

Victim entityBastyr University

Incidentdiscovered Apr 30, 2025

Stated responseLaunched an investigation with the assistance of third-party specialists

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com