DisclosureLens
Social EngineeringHealthcareHealthcarePhishingStolen CredentialsTargetedCustomer Data InvolvedPIIIdentity (basic)PHIHealth (basic)Government IDMediumContained

Cancer Treatment Centers of America

bd_1ca373962cb4dd11 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 11, 2019

Filed

May 10, 2019

To disclose

9 weeks

Affected

34state residents only

Linked

5 filings

Confidence

65%
Full breach record for Cancer Treatment Centers of America7 incidents on file

CTCA Southeastern Regional Medical Center notified Montana residents of a phishing attack on March 11, 2019, which compromised an employee's email account. Affected data included names, medical record numbers, health insurance info, and government IDs. No SSN or financial data was involved. CTCA engaged forensic investigators and reset credentials.

Incident timeline

undetected · 1 days
discovery → filing · 9 weeks / 60 days

Mar 10, 2019

Begins

Mar 11, 2019

Discovered

May 10, 2019

Filed

vs. sector median

3 wks faster

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Filing propagation · 5 filings · 5 states

View merged incident ↗
HHS OCRMay 10 · first
Montana State AGMay 10 · first · this page

Pattern: first filing May 10 (GA), last May 21 (OR) — a 11-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.