HackingHealthcareHealthcareStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedPHIHealth (basic)Identity (basic)LowContained

UC Davis Health

bd_6c76c57d91eb123e · schema v1 · pii pii-v1

Severity

Low

Discovered

May 24, 2023

Filed

Jul 25, 2023

To disclose

9 weeks

Affected

Not disclosed

Linked

2 filings

Confidence

65%

On May 24, 2023, UC Davis Health discovered that an unauthorized external individual accessed an employee's work email account. The breach potentially exposed patient health information, including names and follow-up care details. UC Davis Health froze the compromised credentials and offered 12 months of credit monitoring to affected individuals.

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California clockDiscovered May 24, 2023 → Notified Jul 27, 202364d ✗ CA 60-day late9 weeks discovery → filing

Incident timeline

discovery → filing · 9 weeks / 62 days

May 24, 2023

Begins

May 24, 2023

Discovered

Jul 25, 2023

Filed

vs. sector median

2 wks faster

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

HHS OCRbd_4c59e03439137e072023-07-28 · +3dVerified

Name: UC Davis Health
norm: uc davis health

Name: UC Davis Health
norm: uc davis health
Industry: Healthcarellm

Discovered: May 24, 2023
Breach occurred: May 24, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 27, 2023
Affected individuals: Not disclosed
Data types: PHIHealth (basic)Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Initial access: valid_credentials

During the incident: Employee’s credentials were promptly frozen
Employee received additional education on IT Security
Offering complimentary 12-month credit monitoring service through Experian
Changes made: Perform routine privacy and security audits
Provide regular staff training about how to protect patient information
Maintain robust policies and procedures for employees
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(62 days from discovery to filing)
Compliance flags: CA 60-day late · 64d
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: May 24, 2023
→ Notified: Jul 27, 2023
64d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: May 24, 2023 → Notified: Jul 27, 2023	64d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings

View merged incident ↗

California State AGJul 25 · first · this page

HHS OCR+3d

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/sb24-570834
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 25, 2023
Raw hash: 336fcdaee63f82178ed03b3b2e0c9e0bc8d394d1d61bdddbb8f3eeec7cae49ec

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityUC Davis Health

Victim entityUC Davis Health

Incidentdiscovered May 24, 2023

Stated responseEmployee’s credentials were promptly frozen

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov