MisuseHealthcareTechnologyHealthcarePrivilege AbuseEmployee Data InvolvedCustomer Data InvolvedIdentity (basic)Government IDPHIMediumContained

Health Management Systems of America

bd_ea6dd320ea2e4b9c · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 21, 2026

Filed

Jun 26, 2026

To disclose

9 weeks

Affected

1state residents only

Confidence

66%

Full breach record for Health Management Systems of America →4 incidents on file

Health Management Systems, Inc. (HMS) notified Massachusetts residents of a data breach occurring on April 21, 2026. An employee uploaded a photo of their workstation to Facebook, exposing personal information including names, addresses, Social Security Numbers, and claim numbers. HMS investigated, had the post removed, and offered 24 months of identity theft protection via IDX. The incident involved Medicaid benefits administration data.

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Massachusetts clock⏱ MA AG >30d9 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

discovery → filing · 9 weeks / 66 days

Apr 21, 2026

Discovered

Jun 26, 2026

Filed

vs. sector median

3 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1 affectedView incident

Name: Health Management Systems of America
norm: health management systems of america
Domain: hmsanet.com

Name: Health Management Systems of America
norm: health management systems of america
Domain: hmsanet.com
Industry: HealthcarellmTechnologyllm

Discovered: Apr 21, 2026
Materiality determined: —
Notification sent: Jun 16, 2026
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government IDPHI
Data elements: Social Security number
Attack vector: Insider
MITRE ATT&CK: T1566.002 Spearphishing Link
Threat actor: Internal
Initial access: insider_action

During the incident: Launched an investigation
Demanded and received written confirmation that the employee removed the posting from Facebook
Taken disciplinary action in accordance with our policies
Arranged for you, at your option, to enroll in a complimentary identity theft protection service through IDX
Changes made: Continuing efforts to enhance the protections in place to secure the information in our care
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(66 days from discovery to filing)
Compliance flags: MA AG >30d
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.

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.mass.gov/doc/2026-1036-health-management-systems-inc/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 26, 2026
Raw hash: c2b16f7493c2138f37ef5faacd5d7c78d57b949fcfb363b771c7f17deaac7651

Reporting entityHealth Management Systems of America

Victim entityHealth Management Systems of America

Incidentdiscovered Apr 21, 2026

Stated responseLaunched an investigation

ComplianceMA AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov