HackingHealthcareTechnologyHealthcareStolen CredentialsCapture Stored DataCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDMediumContained

Healthcare Services Group, Inc.

bd_82a73cadd59014cd · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 7, 2024

Filed

Aug 25, 2025

To disclose

46 weeks

Affected

Not disclosed

Linked

16 filings

Confidence

67%

Full breach record for Healthcare Services Group, Inc. →

Healthcare Services Group, Inc. (HSGI) disclosed a data breach where an unauthorized actor accessed and copied files between September 27 and October 3, 2024. The incident was discovered on October 7, 2024. Impacted data includes names and government identifiers. HSGI secured systems, engaged in investigation, notified regulators and law enforcement, and offered credit monitoring services to affected individuals.

J jump to incidentP pin to compareR raw source

Vermont clock✗ VT AG >45 bday46 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 · 10 days

discovery → filing · 46 weeks / 322 days

Sep 27, 2024

Begins

Oct 7, 2024

Discovered

Aug 25, 2025

Filed

vs. sector median

+34 wks slower

This filing is one of 16 about the same incident.View merged incident

A leak claim by underground about this victim predates this filing by 303 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

New Hampshire State AGbd_2ff23a494fd0eb292025-08-25Verified
Nebraska State AGbd_3d13d9954098db8f2025-08-25Verified
Oregon State AGbd_4999f3b28468b2fa2025-08-25Verified
Washington State AGbd_4e84de9fffe373992025-08-25Verified

Show 6 more filings ↓up to 8d gap

Montana State AGbd_662a2f295d85c2662025-08-25Verified
Delaware State AGbd_846def17f6a32ff92025-08-25Verified
Indiana State AGbd_e2af2ec1ac336df22025-08-25Verified
Texas State AGbd_3c672d9cc70092502025-08-26 · +1dVerified
South Carolina State AGbd_7ca401b90e6988952025-08-26 · +1dVerified
Rhode Island State AGbd_dc5f8588b13682f72025-09-02 · +8dVerified

Showing first 10 of 15 linked disclosures.

Name: Healthcare Services Group, Inc.
norm: healthcare services
Domain: hcsgcorp.com

Name: Healthcare Services Group, Inc.
norm: healthcare services
Domain: hcsgcorp.com
Industry: HealthcarellmTechnologyllm

Discovered: Oct 7, 2024
Breach occurred: Sep 27, 2024 – Oct 3, 2024
Undetected for: 10 daysoccurrence → discovery
Materiality determined: Aug 25, 2025
Notification sent: Aug 25, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Regulator citations: notified relevant state and federal regulators as applicablenotified federal law enforcement
Initial access: valid_credentials

During the incident: Promptly took steps to secure our systems
Began a comprehensive investigation
Worked to provide affected plans individuals with notice
Continue to review and enhance existing policies and procedures relating to data protection and security
Implemented additional security measures to mitigate risk associated with this event
Notified relevant state and federal regulators as applicable
Notified federal law enforcement
Offering you complimentary access to 12/24 months of credit monitoring and identity restoration services through Experian
Changes made: Implemented additional security measures to mitigate risk associated with this event
Continue to review and enhance existing policies and procedures relating to data protection and security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 46 weeks(322 days from discovery to filing)
Compliance flags: VT AG >45 bdayLeak >180d
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 · 11 filings · 11 states

View merged incident ↗

New Hampshire State AGAug 25 · first

Nebraska State AGAug 25 · first

Oregon State AGAug 25 · first

Washington State AGAug 25 · first

Montana State AGAug 25 · first

Delaware State AGAug 25 · first

Indiana State AGAug 25 · first

Vermont State AGAug 25 · first · this page

Texas State AG+1d

South Carolina State AG+1d

Rhode Island State AG+8d

Pattern: first filing Aug 25 (NH), last Sep 2 (RI) — a 8-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 15 — the full spread may be wider.

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/2025-08-25-healthcare-services-group-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 25, 2025
Raw hash: 6f8098b198f19f93daf2f317cfbd6014c1da7b9aa7756e5d3bf01aec115a0ba4

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityHealthcare Services Group, Inc.

Victim entityHealthcare Services Group, Inc.

Incidentdiscovered Oct 7, 2024

Stated responsePromptly took steps to secure our systems

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov