DisclosureLens
HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedGovernment IDIdentity (basic)CriticalContained

CITY OF HOPE

bd_eacec21685bd1ec2 · schema v1 · pii pii-v1

Severity

Critical

Discovered

Mar 25, 2024

Filed

Apr 2, 2024

To disclose

8 days

Affected · nationwide

827,149166 in this filing

Linked

10 filings

Confidence

66%
Full breach record for CITY OF HOPE4 incidents on file

City of Hope, a healthcare entity based in Duarte, California, reported an external system breach (hacking) occurring between July 7, 2023, and October 15, 2023. The breach was discovered on March 25, 2024, and affected approximately 827,149 individuals, including 166 Maine residents. Personal information acquired included names and Social Security Numbers. City of Hope provided written notification and offered two years of complimentary identity theft monitoring through Kroll.

Maine clockDiscovered Mar 25, 2024Filed with AG Apr 2, 20248d ME AG ≤30d8 days discovery → filing
AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 262 days
discovery → filing · 8 days

Jul 7, 2023

Begins

Mar 25, 2024

Discovered

Apr 2, 2024

Filed

vs. sector median

11 wks faster

This filing is one of 10 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (9) · sorted by filing gap

Show 5 more filingsup to 14d gap

Filing propagation · 10 filings · 9 states

View merged incident ↗

Pattern: first filing Apr 1 (IL), last Apr 16 (OR) — a 15-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.