HackingTechnologyInformationData ExfiltratedCustomer Data InvolvedIdentity (basic)LowContained

Horizontal Integration, Inc.

bd_03b6870d9d8c1b1c · schema v1 · pii pii-v1

Severity

Low

Discovered

Jul 9, 2024

Filed

Oct 29, 2024

To disclose

16 weeks

Affected

1state residents only

Linked

4 filings

Confidence

64%

Full breach record for Horizontal Integration, Inc. →2 incidents on file

Horizontal Integration, Inc. notified Montana AG of unauthorized access to systems between July 3-11, 2024, discovered July 9, 2024. Access resulted in unauthorized file access/taking. Affected data includes names. Notification sent Oct 29, 2024. Remediation included third-party forensics, policy updates, and 24-month credit monitoring via Experian.

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Incident timeline

undetected · 6 days

discovery → filing · 16 weeks / 112 days

Jul 3, 2024

Begins

Jul 9, 2024

Discovered

Oct 29, 2024

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

Vermont State AGbd_1dce80056750ffb22024-10-29Verified
New Hampshire State AGbd_489e4e6e7a9a7bda2024-10-29Verified
Maine State AGbd_9d337438cb51e1dd2024-10-29Verified

Name: Horizontal Integration, Inc.
norm: horizontal integration
Domain: horizontal.com

Name: Horizontal Integration, Inc.
norm: horizontal integration
Domain: horizontal.com
Industry: Technologyllm

Discovered: Jul 9, 2024
Breach occurred: Jul 3, 2024 – Jul 11, 2024
Undetected for: 6 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 29, 2024
Affected individuals: 1state-resident count only
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External

During the incident: Worked to secure our systems
With the assistance of third-party cybersecurity specialists, began investigating
Undertook a comprehensive review of the data at risk
Reviewing and updating existing policies and procedures relating to data protection and security
Implemented additional security measures designed to mitigate risk associated with this incident
Providing you with twenty-four (24) months of complimentary access to credit monitoring and identity restoration services through Experian
Changes made: Reviewing and updating existing policies and procedures relating to data protection and security
Implemented additional security measures designed to mitigate risk associated with this incident
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 16 weeks(112 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 ↗

Vermont State AGOct 29 · first

New Hampshire State AGOct 29 · first

Maine State AGOct 29 · first

Montana State AGOct 29 · first · this page

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/2024/11/Consumer-notification-letter-4.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 29, 2024
Raw hash: 7939e8eeeb13e5c1df32ced13497605084b08eaff297a3cb323ed430c6c79d0f

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityHorizontal Integration, Inc.

Victim entityHorizontal Integration, Inc.

Incidentdiscovered Jul 9, 2024

Stated responseWorked to secure our systems

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov