HackingHealthcareHealthcareCustomer Data InvolvedIdentity (basic)Financial accountMediumContained

HORIZON HOUSE, LTD.

bd_6fd8c199e66fca96 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 3, 2021

Filed

Sep 17, 2021

To disclose

14 days

Affected · nationwide

35,1071 in this filing

Linked

6 filings

Confidence

66%

Full breach record for HORIZON HOUSE, LTD. →

Horizon House, Inc., a healthcare entity based in Philadelphia, PA, reported an external system breach (hacking) occurring between March 2 and March 5, 2021. The incident compromised the personal information (names and financial account or credit/debit card numbers) of 35,107 individuals, including one Maine resident. The breach was discovered on September 3, 2021, and written notifications were sent to affected individuals on September 17, 2021, offering 12 months of credit monitoring services.

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Maine clockDiscovered Sep 3, 2021 → Filed with AG Sep 17, 202114d ✓ ME AG ≤30d14 days discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 185 days

discovery → filing · 14 days

Mar 2, 2021

Begins

Sep 3, 2021

Discovered

Sep 17, 2021

Filed

vs. sector median

10 wks faster

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Delaware State AGbd_092cf803dc51e8282021-09-17Candidate
HHS OCRbd_1f196456df5f6cb42021-09-17Verified
Massachusetts State AGbd_38bed8bbd0592d782021-09-17Verified
Indiana State AGbd_ced4e4ac96eb8e5d2021-09-17Verified

Show 1 more filing ↓up to 4d gap

New Hampshire State AGbd_43e7e1f8a75c874b2021-09-21 · +4dVerified

Name: HORIZON HOUSE, LTD.
norm: horizon house

Name: HORIZON HOUSE, LTD.
norm: horizon house
Industry: Healthcarellm

Discovered: Sep 3, 2021
Breach occurred: Mar 2, 2021 – Mar 5, 2021
Undetected for: 185 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 17, 2021
Affected individuals: 35,107state + nationwide
Data types: Identity (basic)Financial account
Data elements: Financial account number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: ExternalFinancial
Regulator citations: Filed data breach notice with Maine Attorney General
Initial access: exploit_public_facing

During the incident: Sent written notification to affected individuals
Offered 12 months of credit monitoring, fraud consultation and identity restoration services through TransUnion Interactive
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 14 days(14 days from discovery to filing)
Compliance flags: ME AG ≤30d · 14d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Sep 3, 2021
→ Filed with AG: Sep 17, 2021
14d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Sep 3, 2021 → Filed with AG: Sep 17, 2021	14d	30 days	ME AG ≤30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Delaware State AGSep 17 · first

HHS OCRSep 17 · first

Massachusetts State AGSep 17 · first

Indiana State AGSep 17 · first

Maine State AGSep 17 · first · this page

New Hampshire State AG+4d

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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/1482d252-f724-426a-99cd-3ea9b53b1b51.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 17, 2021
Raw hash: ffe1deffedc13f2d9ceb054fcd52813608535bdb9ffdf97621d4f9d21e81579a

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityHORIZON HOUSE, LTD.

Victim entityHORIZON HOUSE, LTD.

Incidentdiscovered Sep 3, 2021

Stated responseSent written notification to affected individuals

ComplianceME AG ≤30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov