DisclosureLens
UnknownHealthcareHealthcareCustomer Data InvolvedEmployee Data InvolvedPIIPHIIdentity (basic)LowContained

Cornerstone Healthcare Group Management Services LLC

bd_28201747796ff006 · schema v1 · pii pii-v1

Severity

Low

Discovered

Dec 19, 2023

Filed

Nov 1, 2024

To disclose

46 weeks

Affected

Not disclosed

Linked

4 filings

Confidence

65%
Full breach record for Cornerstone Healthcare Group Management Services LLC →3 incidents on file

Cornerstone Healthcare Group Management Services LLC notified consumers of a data breach. The company became aware of suspicious network activity in mid-December 2023, confirming unauthorized access occurred on December 19, 2023. Personal information, potentially including PHI, was accessed. The company contained the issue, contacted law enforcement, engaged cybersecurity firms, and offered identity monitoring services.

Vermont clock✗ VT AG >45 bday46 weeks discovery → filing

Incident timeline

discovery → filing · 45 weeks / 318 days

Dec 19, 2023

Begins

Dec 19, 2023

Discovered

Nov 1, 2024

Filed

vs. sector median

+33 wks slower

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

Filing propagation · 4 filings · 3 states

View merged incident ↗
Vermont State AGNov 1 · first · this page
California State AG+1d
New Hampshire State AG+3d
New Hampshire State AG+5d

Pattern: first filing Nov 1 (VT), last Nov 6 (NH) — a 5-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.