MalwareHealthcareHealthcareRansomwareData EncryptedTargetedIdentity (basic)Government IDHealth (basic)PHIMediumContained

Mat-Su Surgical Associates, APC

bd_dc8c026998dc5702 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 16, 2020

Filed

May 15, 2020

To disclose

9 weeks

Affected

15state residents only

Linked

5 filings

Confidence

63%

Full breach record for Mat-Su Surgical Associates, APC →2 incidents on file

Mat-Su Surgical Associates, APC notified Montana residents of a March 16, 2020 ransomware attack that encrypted files and potentially exposed patient PHI, including names, SSNs, and medical records. The company engaged forensic investigators, reset passwords, enhanced remote access controls, and provided 12 months of credit monitoring.

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Incident timeline

discovery → filing · 9 weeks / 60 days

Mar 16, 2020

Begins

Mar 16, 2020

Discovered

May 15, 2020

Filed

vs. sector median

4 wks faster

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_9bcd3180186d1a3f2020-05-15Verified
HHS OCRbd_febfeb21d058e71f2020-05-15Verified
New Hampshire State AGbd_07d14df0421918c12020-05-18 · +3dVerified
Massachusetts State AGbd_01a3ad3c638267822020-05-27 · +12dVerified

Name: Mat-Su Surgical Associates, APC
norm: mat su surgical associates apc

Name: Mat-Su Surgical Associates, APC
norm: mat su surgical associates apc
Industry: Healthcarellm

Discovered: Mar 16, 2020
Breach occurred: Mar 16, 2020
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 15, 2020
Affected individuals: 15state-resident count only
Data types: Identity (basic)Government IDHealth (basic)PHI
Data elements: Social Security numberMedical information
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for Impact
Threat actor: ExternalFinancial

During the incident: Hired independent computer forensic investigators
Put additional controls in place for any type of remote access to our systems
Implemented a global password reset
Reviewing our policies and procedures
Arranged for you to receive credit monitoring and identity protection services at no cost to you
Changes made: Put additional controls in place for any type of remote access to our systems
Implemented a global password reset
Reviewing our policies and procedures to ensure that the appropriate controls are in place to protect PHI
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(60 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Indiana State AGMay 15 · first

HHS OCRMay 15 · first

Montana State AGMay 15 · first · this page

New Hampshire State AG+3d

Massachusetts State AG+12d

Pattern: first filing May 15 (IN), last May 27 (MA) — a 12-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://dojmt.gov/wp-content/uploads/OCP/Consumer-88.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 15, 2020
Raw hash: 4f0a7c4d104564015295d7755f35e1ceb92dadf4f6cb9ecb52c4458f1ea51079

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityMat-Su Surgical Associates, APC

Victim entityMat-Su Surgical Associates, APC

Incidentdiscovered Mar 16, 2020

Stated responseHired independent computer forensic investigators

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov