Western Alliance Bank (“WAB”)

Western Alliance Bank (“WAB”) notified California AG on Mar 14, 2025 of a data breach, which occurred on Oct 24, 2024. Data exposed: Social Security number, Passport number, Financial / bank account, Date of birth, Tax ID / EIN / ITIN, Name.

All 2 filings by Western Alliance Bank (“WAB”), state by state · Case file (dates, days to notice against the statute, what the letter offers, prior incidents)

Organization: Western Alliance Bank (“WAB”)
Source: California AG · source record
Date reported: Mar 14, 2025
Date(s) of breach: Saturday, October 12, 2024Thursday, October 24, 2024
Residents affected: Not published by this source
Data exposed: Social Security number Passport number Financial / bank account Date of birth Tax ID / EIN / ITIN Name
Notice letter: Sample notice (PDF)
Discovered: Jan 27, 2025, as stated in the letter
"Western Alliance learned that an unauthorized actor had potentially accessed some of Western Alliance’s data on January 27, 2025."
Days to notice: 46 days from discovery (Jan 27, 2025) to the California record (Mar 14, 2025). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82). Over the statutory period
Offered in the letter: 12 months of credit or identity monitoring through Experian
Third party: The letter attributes the incident to a vendor or service provider
First seen by BreachTally: 2026-10-30 15:31 UTC

Dates and counts as filed by the organization with the agency. The breach window and the report date often differ by months.

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Other filings by Western Alliance Bank (“WAB”)

Organization	Source	State	Reported	Residents affected	Data exposed
Western Alliance Bank ("WAB")	Oregon DOJ	OR	Jun 30, 2025	78,338	Not stated

Data reproduced from a public government filing. Spot an error? Email support@breachtally.com with the record link. Corrections are applied and noted.