All Breaches
October 12, 2024 Verified Sensitive Record Financial Services

Western Alliance Bank 2024 Data Breach

The Western Alliance Bank 2024 data breach resulted from exploitation of a then-unknown vulnerability in third-party secure file-transfer software used by the bank.

21.9 Thousand
Reported Records
8
Data Types
Medium
Severity
Yes
Verification

Exposed Data Types

8
Personal information
Names
Social security numbers
Dates of birth
Financial account numbers
Driver's license numbers
Tax identification numbers
Passport numbers

Additional Information

Added DateJuly 27, 2026
Breach DateOctober 12, 2024
Domainwesternalliancebancorporation.com
SourceWestern Alliance Bank regulatory notice confirming third-party file-transfer exploitation and acquisition of files affecting 21,899 people
Last Content UpdateJuly 27, 2026

Verification and editorial method

LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.

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Company Information

Company NameWestern Alliance Bank
SectorFinancial Services
CountryUnited States
Websitewesternalliancebancorporation.com

Risk Level

Medium

The reported impact exceeds 10 thousand and falls within the medium severity band.

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