Social EngineeringFinancial ServicesFinancePhishingStolen CredentialsDelayed DiscoveryIdentity (basic)LowContained

CREDIT UNION OF SOUTHERN CALIFORNIA

bd_df0b12f39d31af62 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jan 31, 2023

Filed

May 18, 2023

To disclose

15 weeks

Affected

Not disclosed

Linked

4 filings

Confidence

66%

Full breach record for CREDIT UNION OF SOUTHERN CALIFORNIA →

Credit Union of Southern California (CU SoCal) notified consumers of a data breach involving the email account of a former CalBear employee. Unauthorized access occurred between Jan 11-31, 2023. CU SoCal reset passwords, engaged forensic specialists, and offered 24 months of credit monitoring. No actual misuse confirmed. Data potentially involved: names.

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Vermont clock✗ VT AG >45 bday15 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 · 20 days

discovery → filing · 15 weeks / 107 days

Jan 11, 2023

Begins

Jan 31, 2023

Discovered

May 18, 2023

Filed

vs. sector median

+7 wks slower

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Indiana State AGbd_42479ec1e8736d032023-05-18Verified
California State AGbd_8f27d1346d2ebeff2023-05-18Candidate
California State AGbd_bcc967111ff13a782023-06-01 · +14dCandidate

Name: CREDIT UNION OF SOUTHERN CALIFORNIA
norm: credit union of southern california

Name: CREDIT UNION OF SOUTHERN CALIFORNIA
norm: credit union of southern california
Industry: Financial Servicesllm

Discovered: Jan 31, 2023
Breach occurred: Jan 11, 2023 – Jan 31, 2023
Undetected for: 20 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 18, 2023
Affected individuals: Not disclosed
Data types: Identity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: External
Initial access: phishing_link

During the incident: Reset the email account password for the impacted Cal Bear employee
Initiated an investigation to determine who may have been impacted by the unauthorized email access
Engaged third-party forensic specialists
Offering you immediate access to complimentary credit monitoring and identity theft protection services for 24 months, through Experian
Changes made: Bolster employee training
Emphasized our policies and procedures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 weeks(107 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 · 4 filings · 3 states

View merged incident ↗

Indiana State AGMay 18 · first

California State AGMay 18 · first

Vermont State AGMay 18 · first · this page

California State AG+14d

Pattern: first filing May 18 (IN), last Jun 1 (CA) — a 14-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/2023-05-18-credit-union-southern-california-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 18, 2023
Raw hash: bf30dd37591dca0c7a8a1c28fca366035f5bcf2834af5e5d568b15ca5d8e8bf6

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityCREDIT UNION OF SOUTHERN CALIFORNIA

Victim entityCREDIT UNION OF SOUTHERN CALIFORNIA

Incidentdiscovered Jan 31, 2023

Stated responseReset the email account password for the impacted Cal Bear employee

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov