AccidentalHealthcareHealthcareMisdeliveryEmployee Data InvolvedPHIHealth (basic)Identity (basic)LowResolved

UW Health

bd_66e47913599ffc76 · schema v1 · pii pii-v1

Severity

Low

Discovered

Feb 28, 2020

Filed

Apr 23, 2020

To disclose

8 weeks

Affected

1state residents only

Confidence

64%

Full breach record for UW Health →41 incidents on file

UW Health notified Montana of a breach on April 23, 2020, occurring on February 28, 2020. An employee inadvertently emailed PHI (diagnosis, address, MRN, name) to a personal account. UW Health investigated, destroyed data, took employment action, and implemented procedural changes.

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Incident timeline

discovery → filing · 8 weeks / 55 days

Feb 28, 2020

Begins

Feb 28, 2020

Discovered

Apr 23, 2020

Filed

vs. sector median

1 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1 affectedView incident

Name: UW Health
norm: uw health
Domain: uwhealth.org

Name: UW Health
norm: uw health
Domain: uwhealth.org
Industry: Healthcarellm

Discovered: Feb 28, 2020
Breach occurred: Feb 28, 2020
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 23, 2020
Affected individuals: 1state-resident count only
Data types: PHIHealth (basic)Identity (basic)
Attack vector: Unknown
MITRE ATT&CK: T1535 Unauthorized Access of Cloud Storage Object
Threat actor: Internal
Initial access: insider_action

During the incident: Launched an investigation immediately to determine how this error occurred
Developed and implemented an action plan to ensure that procedures are followed to avoid this type of error in the future
Properly destroyed the information
Took appropriate employment action
Changes made: Developed and implemented an action plan to ensure that procedures are followed to avoid this type of error in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(55 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

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://dojmt.gov/wp-content/uploads/OCP/Breach-NotificationDetails-160.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 23, 2020
Raw hash: f14f7fc00d6a6b24def020e56f67fc4e2863ec7427b2e8eec7875aa61f460d6d

Reporting entityUW Health

Victim entityUW Health

Incidentdiscovered Feb 28, 2020

Stated responseLaunched an investigation immediately to determine how this error occurred

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov