HackingHealthcareHealthcareCustomer Data InvolvedHealth (basic)Identity (basic)Government IDMediumContained

Minnesota Epilepsy Group

bd_291522eded1c251f · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 7, 2026

Filed

Jun 5, 2026

To disclose

8 weeks

Affected

28state residents only

Linked

3 filings

Confidence

64%

Full breach record for Minnesota Epilepsy Group →4 incidents on file

Minnesota Epilepsy Group, P.A. disclosed a cybersecurity incident where an unauthorized third party accessed its network between March 16, 2026, and April 10, 2026. The breach potentially exposed patient personal information, including names, addresses, dates of birth, and Social Security numbers. The company engaged forensic investigators, notified law enforcement, and offered two years of complimentary credit monitoring via Experian IdentityWorks.

J jump to incidentP pin to compareR raw source

Massachusetts clock⏱ MA AG >30d8 weeks discovery → filing

Incident timeline

undetected · 22 days

discovery → filing · 8 weeks / 59 days

Mar 16, 2026

Begins

Apr 7, 2026

Discovered

Jun 5, 2026

Filed

vs. sector median

1 wks faster

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

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Montana State AGbd_5b1081dc6c650f9a2026-06-05Verified
HHS OCRbd_b89be6bdff57ff612026-06-05Verified

Name: Minnesota Epilepsy Group
norm: minnesota epilepsy
Domain: mnepilepsy.org

Name: Minnesota Epilepsy Group
norm: minnesota epilepsy
Domain: mnepilepsy.org
Industry: Healthcarellm

Discovered: Apr 7, 2026
Breach occurred: Mar 16, 2026 – Apr 10, 2026
Undetected for: 22 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 18, 2026
Affected individuals: 28state-resident count only
Data types: Health (basic)Identity (basic)Government ID
Data elements: Date of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Initial access: exploit_public_facing

During the incident: Began an internal investigation
Worked to secure our systems
Notified law enforcement
Engaged a forensic security firm to assist with our investigation
Changes made: Enhancing our technical security measures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(59 days from discovery to filing)
Compliance flags: MA 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.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Montana State AGJun 5 · first

HHS OCRJun 5 · first

Massachusetts State AGJun 5 · 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://www.mass.gov/doc/2026-915-minnesota-epilepsy-group-pa/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 5, 2026
Raw hash: 834b1b4d52fab87098a94f5c727142535b19ddb2d8d66189958b1666dc46e463

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityMinnesota Epilepsy Group

Victim entityMinnesota Epilepsy Group

Incidentdiscovered Apr 7, 2026

Stated responseBegan an internal investigation

ComplianceMA AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov