MalwareHealthcareHealthcareRansomwareData EncryptedCustomer Data InvolvedPHIHealth (basic)Identity (basic)MediumContained

Deer Oaks Behavioral Health

bd_daa31c59b03310ca · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 1, 2023

Filed

Nov 6, 2023

To disclose

9 weeks

Affected

1,562state residents only

Linked

4 filings

Confidence

66%

Full breach record for Deer Oaks Behavioral Health →2 incidents on file

Deer Oaks Behavioral Health notified the NH AG of a ransomware incident discovered on Sept 1, 2023. Unauthorized access affected PHI including diagnosis codes and insurance info for 1,562 NH residents. Deer Oaks engaged forensic investigators, isolated the segment, and offered credit monitoring.

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Incident timeline

discovery → filing · 9 weeks / 66 days

Sep 1, 2023

Begins

Sep 1, 2023

Discovered

Nov 6, 2023

Filed

vs. sector median

3 wks faster

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_1b13f60bfa0b74f22023-10-31 · +6dCandidate
Indiana State AGbd_83aa209230579bbb2023-10-31 · +6dVerified
Maine State AGbd_d934d79eb772ef042023-10-31 · +6dVerified

Name: Wilson, Elser, Moskowitz, Edelman & Dicker LLP
norm: wilson elser moskowitz edelman dicker
Domain: wilsonelser.com

Name: Deer Oaks Behavioral Health
norm: deer oaks behavioral health
Industry: Healthcarellm

Discovered: Sep 1, 2023
Breach occurred: Sep 1, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 31, 2023
Affected individuals: 1,562state-resident count only
Data types: PHIHealth (basic)Identity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Attorney General

During the incident: Engaged a specialized incident response vendor to secure its network and conduct a thorough forensic investigation
Conducted a review of the data maintained within the impacted server
Offered complimentary credit monitoring and identity theft restoration services through IDX
Provided guidance on how to better protect against identity theft and fraud
Changes made: Strengthened its security posture to prevent a similar event from occurring again in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(66 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 ↗

Montana State AGOct 31 · first

Indiana State AGOct 31 · first

Maine State AGOct 31 · first

New Hampshire State AG+6d · this page

Pattern: first filing Oct 31 (MT), last Nov 6 (NH) — a 6-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/deer-oaks-behavioral-health-20231106.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 6, 2023
Raw hash: 3eb76527517d1dae562d60a79e85057204e8f118e17e81d6fad22f7d8f26e450

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityWilson, Elser, Moskowitz, Edelman & Dicker LLP

Victim entityDeer Oaks Behavioral Health

Incidentdiscovered Sep 1, 2023

Stated responseEngaged a specialized incident response vendor to secure its network and conduct a thorough forensic investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov