Social EngineeringHealthcareHealthcarePhishingStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedPHIHealth (basic)Identity (basic)Government IDMediumContained

Mille Lacs Health System

bd_10d2923b568bd44d · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 14, 2019

Filed

May 13, 2020

To disclose

26 weeks

Affected

1state residents only

Linked

4 filings

Confidence

66%

Full breach record for Mille Lacs Health System →2 incidents on file

Mille Lacs Health System notified the NH AG of a phishing incident affecting 1 NH resident. Unauthorized actors accessed 28 employee email accounts between Aug 26, 2019 and Jan 7, 2020. PHI, including SSNs, was potentially exposed. MLHS reset passwords, engaged forensic experts, and offered 12 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 80 days

discovery → filing · 26 weeks / 181 days

Aug 26, 2019

Begins

Nov 14, 2019

Discovered

May 13, 2020

Filed

vs. sector median

+13 wks slower

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Montana State AGbd_3ae007d21dd332ae2020-05-11 · +2dCandidate
HHS OCRbd_ab7f3d53453fd3922020-05-11 · +2dVerified
Massachusetts State AGbd_e569ec91ef8b8a052020-05-08 · +5dVerified

Name: Jackson Lewis
norm: jackson lewis
Domain: jacksonlewis.com

Name: Mille Lacs Health System
norm: mille lacs health system
Industry: Healthcarellm

Discovered: Nov 14, 2019
Breach occurred: Aug 26, 2019 – Jan 7, 2020
Undetected for: 80 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 11, 2020
Affected individuals: 1state-resident count only
Data types: PHIHealth (basic)Identity (basic)Government ID
Data elements: Social Security numberDate of birthMedical information
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Attorney General
Initial access: phishing_link

During the incident: Commenced an investigation
Working with an independent forensic investigation firm to assist us in the investigation
Reset all user account passwords
Implemented additional technology measures
Providing access to credit monitoring services for twelve (12) months through ID Experts
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Changes made: Implemented additional technology measures in order to help prevent this type of incident from reoccurring in the future
Implement additional safeguards and training to its employees
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 26 weeks(181 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Massachusetts State AGMay 8 · first

Montana State AG+3d

HHS OCR+3d

New Hampshire State AG+5d · this page

Pattern: first filing May 8 (MA), last May 13 (NH) — a 5-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://mm.nh.gov/files/uploads/doj/remote-docs/mille-lacs-health-20200513.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 13, 2020
Raw hash: 51e4a3c9ed384553727670f7e0deebfe8b81bde839cf93f5e7ca9d110900a2b3

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityJackson Lewis

Victim entityMille Lacs Health System

Incidentdiscovered Nov 14, 2019

Stated responseCommenced an investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov