Social EngineeringOtherPhishingTargetedPIIIdentity (basic)LowContained

Blakehurst

bd_63ebb36be85dfb35 · schema v1 · pii pii-v1

Severity

Low

Discovered

Feb 7, 2022

Filed

Dec 6, 2022

To disclose

43 weeks

Affected

1state residents only

Linked

5 filings

Confidence

65%

Full breach record for Blakehurst →

Blakehurst (Chestnut Partnership), a senior living community, notified individuals of a data security incident discovered on February 7, 2022. Unauthorized access to select employee email accounts occurred, potentially exposing personal information. The company engaged a cybersecurity firm, enhanced email security, and offered complimentary identity monitoring services through Experian.

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Incident timeline

discovery → filing · 43 weeks / 302 days

Feb 7, 2022

Discovered

Dec 6, 2022

Filed

vs. sector median

+35 wks slower

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_606a300c3cba175d2022-12-06Verified
HHS OCRbd_6fa59eb2cb19291e2022-12-06Verified
New Hampshire State AGbd_e8bf561dd84863fb2022-12-07 · +1dVerified
Massachusetts State AGbd_3cfe03c3db267d4f2022-12-15 · +9dVerified

Name: Blakehurst
norm: blakehurst

Name: Blakehurst
norm: blakehurst
Also named: Chestnut Partnershipdba oflegal entity
Blakehurstdba oftrade name
Industry: Otherllm

Discovered: Feb 7, 2022
Materiality determined: —
Notification sent: Sep 20, 2022
Affected individuals: 1state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing Link
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Engaged a leading cybersecurity firm to assist with an investigation
Engaged a vendor to complete a comprehensive review of the potentially affected data
Implemented measures to enhance the security of our email environment
Offering complimentary identity theft protection services through Experian
Changes made: Implemented measures to enhance the security of our email environment to reduce the risk of a similar incident occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 43 weeks(302 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 AGDec 6 · first

HHS OCRDec 6 · first

Montana State AGDec 6 · first · this page

New Hampshire State AG+1d

Massachusetts State AG+9d

Pattern: first filing Dec 6 (IN), last Dec 15 (MA) — a 9-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-762.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 6, 2022
Raw hash: 808c726265fe43a3c42265d4df0930fca2589340a9adc6bf9face77077ccaa91

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityBlakehurst

Victim entityBlakehurst

Incidentdiscovered Feb 7, 2022

Stated responseEngaged a leading cybersecurity firm to assist with an investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov