Where does the Western Alliance Bank (“WAB”) case file come from?

Every entry is taken from the breach report Western Alliance Bank (“WAB”) lodged with the California Attorney General. Nothing here is estimated.

Why do the incident date and the report date differ?

Companies usually investigate before they report. The gap between the two dates shows how long that took.

What does the records-affected figure count?

It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.

Does this case file change over time?

Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

Case file

Case File: Western Alliance Bank (“WAB”) Data Breach

This file collects the dated facts on record for the Western Alliance Bank (“WAB”) incident. The state report is dated March 14, 2025. The incident itself is dated October 12, 2024.

Timeline

153 days separate the incident date from the date it was reported.

October 12, 2024Incident dateWhen the filing says the breach took place.
March 14, 2025Report filed in CaliforniaDate the notice was lodged with the California Attorney General.

Case facts

Filing state: California
Date reported: March 14, 2025
Incident date: October 12, 2024
Receiving office: California Attorney General

Case notes

Western Alliance Bank (WAB) has submitted a data breach notification to regulatory bodies in California, documenting an incident that reportedly took place on October 12, 2024. The bank formally reported this breach on March 14, 2025, initiating a public record of the event.

The nature of the breach itself, as well as the specific categories of personal information involved, have not been detailed in the public filing. WAB has indicated that an investigation into the incident is currently underway, aiming to understand the full scope and impact of the compromise.

The number of individuals whose personal information may have been affected by this incident also remains unspecified in the available public records. Individuals who receive direct notifications from Western Alliance Bank regarding this event can refer to this filing as part of the official public record.

In light of such incidents, it is generally advised for individuals to remain vigilant. This includes carefully reviewing financial statements and other account activity for any suspicious transactions. Additionally, exercise caution when encountering unsolicited communications, whether by email, phone, or text, that claim to be from WAB or related entities, as these could be attempts at phishing.

This documentation is based on information made available through public regulatory filings and aims to provide a factual overview of the reported data security incident.

Questions about this case file

Where does the Western Alliance Bank (“WAB”) case file come from?: Every entry is taken from the breach report Western Alliance Bank (“WAB”) lodged with the California Attorney General. Nothing here is estimated.
Why do the incident date and the report date differ?: Companies usually investigate before they report. The gap between the two dates shows how long that took.
What does the records-affected figure count?: It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.
Does this case file change over time?: Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

California data breaches

Filing source: California Attorney General

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Timeline

Case facts

Case notes

Questions about this case file

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