MalwareHealthcareEducationHealthcareRansomwareData EncryptedData ExfiltratedRansom DemandedRansom PaidCustomer Data InvolvedEmployee Data InvolvedGovernment IDIdentity (basic)Health (basic)Financial accountPHIMediumContained

University of California, San Francisco

bd_7353599986c4452b · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 1, 2020

Filed

Nov 13, 2020

To disclose

24 weeks

Affected

Not disclosed

Linked

2 filings

Confidence

66%

Full breach record for University of California, San Francisco →6 incidents on file

On June 1, 2020, University of California San Francisco (UCSF) detected a ransomware attack on a limited part of its School of Medicine IT environment. The attacker obtained certain files and encrypted others. UCSF contained the incident, paid the ransom to decrypt data, and notified law enforcement. Affected data may include names, SSNs, health information, and financial data. UCSF offered 12 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >90d24 weeks discovery → filing

Incident timeline

discovery → filing · 24 weeks / 165 days

Jun 1, 2020

Begins

Jun 1, 2020

Discovered

Nov 13, 2020

Filed

vs. sector median

+13 wks slower

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

A leak claim by netwalker about this victim predates this filing by 165 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitenetwalkerbd_41de58974752c3532020-06-01 · +165dCandidate

Name: University of California, San Francisco
norm: university of california san francisco
Domain: ucsf.edu

Name: University of California, San Francisco
norm: university of california san francisco
Domain: ucsf.edu
Industry: HealthcarellmEducationllm

Discovered: Jun 1, 2020
Breach occurred: Jun 1, 2020
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Government IDIdentity (basic)Health (basic)Financial accountPHI
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified law enforcement

During the incident: Immediately isolated the impacted environment
Successfully contained the incident from the core UCSF network
Notified law enforcement
Retained a leading data security firm to assist in investigating the incident
Launched a thorough investigation
Offering 12 months of complimentary credit monitoring and identity theft restoration services through IDX
Changes made: Implementation of a number of enhancements to our security and privacy program
Strengthening existing controls
Data backup
User training and awareness
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 weeks(165 days from discovery to filing)
Compliance flags: Leak >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

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/sb24-196123
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 13, 2020
Raw hash: b856e6c42f355e08603ff728de6f92d4c9440f5d51f42dca1c4297d4da7a457c

Linked disclosures

Ransomware claims (1)

Reporting entityUniversity of California, San Francisco

Victim entityUniversity of California, San Francisco

Incidentdiscovered Jun 1, 2020

Stated responseImmediately isolated the impacted environment

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov