MalwareHealthcareHealthcareRansomwareData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDPHIHealth (basic)MediumContained

OB-GYN ASSOCIATES OF GREEN BAY, LTD.

bd_db23a632d5a05b69 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 7, 2025

Filed

Oct 29, 2025

To disclose

12 weeks

Affected

12state residents only

Linked

9 filings

Confidence

66%

Full breach record for OB-GYN ASSOCIATES OF GREEN BAY, LTD. →

OB-GYN Associates experienced a ransomware attack on August 7, 2025, resulting in the unauthorized acquisition of patient data including names, SSNs, driver's license numbers, and medical information. The incident affected 12 New Hampshire residents. The organization contained the incident, engaged forensic investigators, notified the FBI, and offered credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

discovery → filing · 12 weeks / 83 days

Aug 7, 2025

Begins

Aug 7, 2025

Discovered

Oct 29, 2025

Filed

vs. sector median

1 wks faster

This filing is one of 9 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (8) · sorted by filing gap

Indiana State AGbd_568cc758d8ba05692025-10-29Verified
Vermont State AGbd_635dc936fe30084a2025-10-29Verified
Maine State AGbd_73c60735d4e969b82025-10-29Verified
California State AGbd_7ff948a8f329576d2025-10-29Verified

Show 4 more filings ↓up to 49d gap

Nebraska State AGbd_fac9377cfd865ee72025-10-29Verified
Massachusetts State AGbd_5d16f8d73af0964b2025-10-30 · +1dVerified
New Hampshire State AGbd_62bbb0271e1447ba2025-09-10 · +49dVerified
Montana State AGbd_ae83a9c0ba62af602025-09-10 · +49dCandidate

Name: OB-GYN ASSOCIATES OF GREEN BAY, LTD.
norm: ob gyn associates of green bay

Name: OB-GYN ASSOCIATES OF GREEN BAY, LTD.
norm: ob gyn associates of green bay
Industry: Healthcarellm

Discovered: Aug 7, 2025
Breach occurred: Aug 7, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 29, 2025
Affected individuals: 12state-resident count only
Data types: Identity (basic)Government IDPHIHealth (basic)
Data elements: Social Security numberMedical information
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified the FBI

During the incident: Took steps to secure its network and contain the incident
Engaged a specialized third-party forensic incident response firm
Wiped and rebuilt affected systems
Notified the FBI and are fully cooperating with their investigation
Offered free credit monitoring and identity theft protection through TransUnion
Changes made: Changed passwords
Strengthened password requirements
Implemented multi-factor authentication
Reviewing and altering policies, procedures, and network security software
Bolstering network security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 weeks(83 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 9 filings · 8 states

View merged incident ↗

New Hampshire State AGSep 10 · first

Montana State AGSep 10 · first

Indiana State AG+49d

Vermont State AG+49d

Maine State AG+49d

California State AG+49d

Nebraska State AG+49d

New Hampshire State AG+49d · this page

Massachusetts State AG+50d

Pattern: first filing Sep 10 (NH), last Oct 30 (MA) — a 50-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/ob-gyn-associates-20251029.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 29, 2025
Raw hash: b1ca9dfab6f8ca7b9d482611f45b3cf55d25841051eca2bd2d3f0b88474c8666

Linked disclosures

Regulatory filings (8) · sorted by filing gap

Reporting entityOB-GYN ASSOCIATES OF GREEN BAY, LTD.

Victim entityOB-GYN ASSOCIATES OF GREEN BAY, LTD.

Incidentdiscovered Aug 7, 2025

Stated responseTook steps to secure its network and contain the incident

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov