HackingHealthcareTechnologyHealthcareStolen CredentialsSupply Chain (3P Vendor)Customer Data InvolvedIdentity (basic)Government IDMediumContained

Rectangle Health

bd_6ae1999fbf53d01f · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 5, 2025

Filed

Oct 8, 2025

To disclose

5 weeks

Affected

Not disclosed

Linked

7 filings

Confidence

66%

Full breach record for Rectangle Health →

Rectangle Health notified consumers of a data breach involving its Salesforce platform. Unauthorized access occurred from August 12-17, 2025, impacting names, SSNs, and dates of birth. The incident was discovered on September 5, 2025. Rectangle Health engaged in investigation and remediation, offering credit monitoring via Epiq.

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Vermont clock⏱ VT AG >14 bday5 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 24 days

discovery → filing · 5 weeks / 33 days

Aug 12, 2025

Begins

Sep 5, 2025

Discovered

Oct 8, 2025

Filed

vs. sector median

4 wks faster

This filing is one of 7 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (6) · sorted by filing gap

Indiana State AGbd_37b9232200ff883b2025-10-08Verified
Montana State AGbd_396a03c05a84425e2025-10-08Candidate
Massachusetts State AGbd_8558768083cd9cbd2025-10-08Verified
New Hampshire State AGbd_a237bd270bf207182025-10-08Verified

Show 2 more filings ↓

Maine State AGbd_c7f48cbd2ba22cde2025-10-08Verified
Nebraska State AGbd_df7e67ac56c2cff32025-10-08Verified

Name: Rectangle Health
norm: rectangle health

Name: Rectangle Health
norm: rectangle health
Industry: HealthcarellmTechnologyllm

Discovered: Sep 5, 2025
Breach occurred: Aug 12, 2025 – Aug 17, 2025
Undetected for: 24 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 8, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Data elements: Social Security numberDate of birth
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain Compromise
Threat actor: External
Third party: via Salesforce
Initial access: supply_chain

During the incident: Launched an investigation to determine what data may have been impacted
Finalized review and determined that information related to you could have been impacted
Took prompt steps to ensure security of its network environment
Conducted a comprehensive review of the information potentially affected
Providing access to credit monitoring services for <<CM Duration>> months through Epiq at no cost
Changes made: Continues to evaluate its policies and procedures related to data privacy and security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(33 days from discovery to filing)
Compliance flags: VT AG >14 bday
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 7 states

View merged incident ↗

Indiana State AGOct 8 · first

Montana State AGOct 8 · first

Massachusetts State AGOct 8 · first

New Hampshire State AGOct 8 · first

Maine State AGOct 8 · first

Nebraska State AGOct 8 · first

Vermont State AGOct 8 · 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://ago.vermont.gov/document/2025-10-08-rectangle-health-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 8, 2025
Raw hash: 465d3264cd8e430be9e22ad1760ba764dd2bd23fc51df4e06a2e3cca9c53cc93

Linked disclosures

Regulatory filings (6) · sorted by filing gap

Reporting entityRectangle Health

Victim entityRectangle Health

Incidentdiscovered Sep 5, 2025

Stated responseLaunched an investigation to determine what data may have been impacted

ComplianceVT AG >14 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov