DisclosureLens
MalwareHealthcareHealthcareRansomwareData EncryptedCustomer Data InvolvedEmployee Data InvolvedPHIGovernment IDIdentity (basic)Health (basic)Financial accountMediumContained

Jefferson-Blount-St. Clair Mental Health Authority

bd_bcdcfbb5c2f081e1 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 25, 2025

Filed

Mar 9, 2026

To disclose

15 weeks

Affected

4state residents only

Linked

2 filings

Confidence

64%
Full breach record for Jefferson-Blount-St. Clair Mental Health Authority →2 incidents on file

Jefferson-Blount-St. Clair Mental Health Authority suffered a ransomware attack on November 25, 2025. Unauthorized access occurred on the same day. Affected data includes PHI, SSNs, health insurance info, and medical records for patients and employees from 2011-2025. The organization secured its network and is offering 24 months of credit monitoring.

Massachusetts clock✗ MA AG >90d15 weeks discovery → filing

Incident timeline

discovery → filing · 15 weeks / 104 days

Nov 25, 2025

Begins

Nov 25, 2025

Discovered

Mar 9, 2026

Filed

vs. sector median

+2 wks slower

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Filing propagation · 2 filings · 2 states

View merged incident ↗
Illinois State AGMar 1 · first
Massachusetts State AG+8d · this page

Pattern: first filing Mar 1 (IL), last Mar 9 (MA) — a 8-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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.