Social EngineeringHealthcareHealthcarePhishingStolen CredentialsTargetedCustomer Data InvolvedEmployee Data InvolvedPIIPHIIdentity (basic)Health (basic)LowContained

BEAUMONT HEALTH

bd_73146f0f5a8f1cd6 · schema v1 · pii pii-v1

Severity

Low

Discovered

Mar 29, 2020

Filed

Apr 17, 2020

To disclose

19 days

Affected

2state residents only

Linked

3 filings

Confidence

66%

Full breach record for BEAUMONT HEALTH →5 incidents on file

Beaumont Health notified Montana residents of a phishing incident where unauthorized access to employee email accounts occurred between May 23 and June 3, 2019. The breach was discovered on March 29, 2020. No evidence of data misuse was found, but personal and protected health information may have been accessed.

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Incident timeline

undetected · 311 days

discovery → filing · 19 days

May 23, 2019

Begins

Mar 29, 2020

Discovered

Apr 17, 2020

Filed

vs. sector median

9 wks faster

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

HHS OCRbd_f62b673b04b729502020-04-17Verified
Massachusetts State AGbd_c8e4b3567c5ed65e2020-04-20 · +3dVerified

Name: BEAUMONT HEALTH
norm: beaumont health

Name: BEAUMONT HEALTH
norm: beaumont health
Industry: Healthcarellm

Discovered: Mar 29, 2020
Breach occurred: May 23, 2019 – Jun 3, 2019
Undetected for: 311 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 2state-resident count only
Data types: PIIPHIIdentity (basic)Health (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: External
Initial access: phishing_link

During the incident: Disabled the accessed email accounts
Required mandatory password resets
Commenced a prompt and thorough investigation
Working closely with external cybersecurity professionals
Extensive forensic investigation
Comprehensive manual document review
Changes made: Implementing additional technical safeguards on our email system
Implemented additional training and education for our employees
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 19 days(19 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

HHS OCRApr 17 · first

Montana State AGApr 17 · first · this page

Massachusetts State AG+3d

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/General-Notice-58.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 17, 2020
Raw hash: 3e4ee043c614846e5b095d87a2578db5b4f0f1567f1b826097b0c2b18d14310a

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityBEAUMONT HEALTH

Victim entityBEAUMONT HEALTH

Incidentdiscovered Mar 29, 2020

Stated responseDisabled the accessed email accounts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov