HackingHealthcareHealthcareData ExfiltratedTargetedIdentity (basic)Government IDFinancial accountHealth (basic)PHIMediumContained

CITY OF HOPE

bd_56c727d6f5a7adc5 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 13, 2023

Filed

Apr 2, 2024

To disclose

25 weeks

Affected

Not disclosed

Linked

10 filings

Confidence

66%

Full breach record for CITY OF HOPE →4 incidents on file

City of Hope notified Vermont AG of a data breach occurring between Sept 19 and Oct 12, 2023. Unauthorized third parties accessed systems and exfiltrated files containing PII, SSNs, financial data, and PHI. City of Hope engaged a cybersecurity firm, reported to law enforcement, and provided two years of Kroll identity monitoring to affected individuals.

J jump to incidentP pin to compareR raw source

Vermont clock✗ VT AG >45 bday25 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

undetected · 24 days

discovery → filing · 25 weeks / 172 days

Sep 19, 2023

Begins

Oct 13, 2023

Discovered

Apr 2, 2024

Filed

vs. sector median

+13 wks slower

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

New Hampshire State AGbd_4e34f10272b1cbb22024-04-02Verified
Montana State AGbd_512fd9d9da2e106b2024-04-02Candidate
California State AGbd_646c0dd6c4c8efee2024-04-02Verified
Washington State AGbd_a206c1ef5bf16dae2024-04-02Verified

Show 5 more filings ↓up to 14d gap

Maine State AGbd_eacec21685bd1ec22024-04-02Verified
Massachusetts State AGbd_2963f93446a9bd2d2024-04-03 · +1dVerified
Oregon State AGbd_9a6d405cfd05175c2024-04-03 · +1dVerified
Illinois State AGbd_cc2dd60a76809e902024-04-01 · +1dVerified
Oregon State AGbd_2b407412ec00741d2024-04-16 · +14dVerified

Name: CITY OF HOPE
norm: city of hope
Domain: cityofhope.org

Name: CITY OF HOPE
norm: city of hope
Domain: cityofhope.org
Industry: Healthcarellm

Discovered: Oct 13, 2023
Breach occurred: Sep 19, 2023 – Oct 12, 2023
Undetected for: 24 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 2, 2024
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial accountHealth (basic)PHI
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: notified regulatory bodies
Initial access: exploit_public_facing

During the incident: Instituted mitigation measures
Implemented additional and enhanced safeguards
Enlisted the support of a leading cybersecurity firm
Launched a comprehensive investigation
Reported the incident to law enforcement
Notified regulatory bodies
Secured the services of Kroll to provide identity monitoring at no cost to you for two years
Changes made: Enhanced the security of our network, systems, and data
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 25 weeks(172 days from discovery to filing)
Compliance flags: VT AG >45 bday
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.

Filing propagation · 10 filings · 9 states

View merged incident ↗

Illinois State AGApr 1 · first

New Hampshire State AG+1d

Montana State AG+1d

California State AG+1d

Washington State AG+1d

Maine State AG+1d

Vermont State AG+1d · this page

Massachusetts State AG+2d

Oregon State AG+2d

Oregon State AG+15d

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.

Source URL: https://ago.vermont.gov/document/2024-04-02-city-hope-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 2, 2024
Raw hash: 998eab26c235f6b3c4031e7d7b9a79e6e1d6a67c46b149b1e01dc806dcf0b37f

Linked disclosures

Regulatory filings (9) · sorted by filing gap

Reporting entityCITY OF HOPE

Victim entityCITY OF HOPE

Incidentdiscovered Oct 13, 2023

Stated responseInstituted mitigation measures

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov