HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedPHIHealth (basic)Identity (basic)LowContained

Fresno Surgical Hospital

bd_73c6015addc68b90 · schema v1 · pii pii-v1

Severity

Low

Discovered

Nov 4, 2023

Filed

Dec 21, 2023

To disclose

7 weeks

Affected

Not disclosed

Confidence

66%

Full breach record for Fresno Surgical Hospital →

Fresno Surgical Hospital disclosed a cybersecurity incident discovered on November 4, 2023, where an unauthorized third party accessed systems and removed data. Affected data included demographic information (name, address, date of birth) and medical/treatment information (including COVID-19 vaccination status). Social Security numbers and financial data were not involved. The organization engaged a forensic firm and enhanced security measures.

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California clockDiscovered Nov 4, 2023 → Notified Dec 21, 202347d ✓ CA 60-day OK7 weeks discovery → filing

Incident timeline

discovery → filing · 7 weeks / 47 days

Nov 4, 2023

Begins

Nov 4, 2023

Discovered

Dec 21, 2023

Filed

vs. sector median

6 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: Fresno Surgical Hospital
norm: fresno surgical hospital

Name: Fresno Surgical Hospital
norm: fresno surgical hospital
Industry: Healthcarellm

Discovered: Nov 4, 2023
Breach occurred: Nov 4, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 21, 2023
Affected individuals: Not disclosed
Data types: PHIHealth (basic)Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1041 Exfiltration Over C2 Channel
Threat actor: External

During the incident: Restricted further unauthorized activity
Launched an investigation at the direction of an outside law firm
Engaged a national forensic firm to assist with investigation and remediation efforts
Changes made: Enhancing security and monitoring capabilities
Hardening systems as appropriate to minimize the risk of similar incidents in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(47 days from discovery to filing)
Compliance flags: CA 60-day OK · 47d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Nov 4, 2023
→ Notified: Dec 21, 2023
47d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Nov 4, 2023 → Notified: Dec 21, 2023	47d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

Status: No extraction artifact recorded for this disclosure.

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://oag.ca.gov/ecrime/databreach/reports/sb24-578321
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 21, 2023
Raw hash: 9362107f9f8f7aaddca293bf63365445f8df485d2b823b547703afb953cfa787

Reporting entityFresno Surgical Hospital

Victim entityFresno Surgical Hospital

Incidentdiscovered Nov 4, 2023

Stated responseRestricted further unauthorized activity

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov