MalwareHealthcareHealthcareRansomwareData EncryptedTargetedPIIIdentity (basic)LowContained

Atlantic General Hospital Corporation

bd_59e7e34a942ade82 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jan 29, 2023

Filed

Mar 24, 2023

To disclose

8 weeks

Affected

8state residents only

Linked

10 filings

Confidence

66%

Full breach record for Atlantic General Hospital Corporation →

Atlantic General Hospital notified Montana residents of a ransomware incident. Unauthorized access began Jan 20, 2023; encrypted files discovered Jan 29, 2023. Impact included names and other PII. Law enforcement notified; credit monitoring offered.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 9 days

discovery → filing · 8 weeks / 54 days

Jan 20, 2023

Begins

Jan 29, 2023

Discovered

Mar 24, 2023

Filed

vs. sector median

4 wks faster

This filing is one of 10 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (9) · sorted by filing gap

HHS OCRbd_0cf873a636a369552023-03-24Verified
Indiana State AGbd_59fe0e8474e453912023-03-24Verified
Massachusetts State AGbd_78dc2cc363989faa2023-03-24Verified
Maine State AGbd_c4598d4c0bd61c342023-03-24Verified

Show 5 more filings ↓up to 91d gap

Delaware State AGbd_d38bbaf5ade2752c2023-03-24Verified
New Hampshire State AGbd_be16c1876a6e4ee62023-03-27 · +3dVerified
Vermont State AGbd_42de4d871ce9fac92023-06-22 · +90dVerified
Delaware State AGbd_77bb476d0371ff912023-06-22 · +90dVerified
Maine State AGbd_ae2055f751dbc9b32023-06-23 · +91dVerified

Name: Atlantic General Hospital Corporation
norm: atlantic general hospital

Name: Atlantic General Hospital Corporation
norm: atlantic general hospital
Industry: Healthcarellm

Discovered: Jan 29, 2023
Breach occurred: Jan 20, 2023
Undetected for: 9 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 24, 2023
Affected individuals: 8state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: reported this incident to law enforcement
Initial access: valid_credentials

During the incident: Launched an investigation, with the assistance of third-party forensic specialists
Reported this incident to law enforcement
Taking steps to implement additional safeguards and review policies and procedures relating to data privacy and security
Providing you with access to credit monitoring and identity protection services through IDX
Changes made: Implement additional safeguards
Review policies and procedures relating to data privacy and security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(54 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 10 filings · 8 states

View merged incident ↗

HHS OCRMar 24 · first

Indiana State AGMar 24 · first

Massachusetts State AGMar 24 · first

Maine State AGMar 24 · first

Delaware State AGMar 24 · first

Montana State AGMar 24 · first · this page

New Hampshire State AG+3d

Vermont State AG+90d

Delaware State AG+90d

Maine State AG+91d

Pattern: first filing Mar 24 (MD), last Jun 23 (ME) — a 91-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-Notification-Letter-831.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 24, 2023
Raw hash: 394bd9950d9ff5515565f90f59423020a31642ab4fe5b52862152d4ff54da137

Linked disclosures

Regulatory filings (9) · sorted by filing gap

Reporting entityAtlantic General Hospital Corporation

Victim entityAtlantic General Hospital Corporation

Incidentdiscovered Jan 29, 2023

Stated responseLaunched an investigation, with the assistance of third-party forensic specialists

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov