Western Alliance Bank
1 breach22K affected in allFinancewesternalliancebank.com
| Breach | Affected | ||||
|---|---|---|---|---|---|
| Cleo zero-day breach exposes 21,899 Western Alliance Bank customersMar 14, 20251 year agoSupply chain | Mar 14, 20251 year ago | Supply chain | Finance | Confirmed | 22K |
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- 2026-09-25 · Western Alliance Bank, 2025-03-14 · campaign: cleo-2024
- 2026-09-25 · Western Alliance Bank, 2025-03-14 · attack: supply-chain
- 2026-09-25 · Western Alliance Bank, 2025-03-14 · data_types: ["names","ssn","financial","dob","government-id"]
- 2026-09-25 · Western Alliance Bank, 2025-03-14 · records_basis: organization
- 2026-09-25 · Western Alliance Bank, 2025-03-14 · records: 21899
- 2026-09-25 · Western Alliance Bank, 2025-03-14 · summary: Western Alliance Bank said attackers exploited a zero-day in a vendor's file transfer software (Cleo) to take files between October 12 and 24, 2024, and notified 21,899 customers.
- 2026-09-25 · Western Alliance Bank, 2025-03-14 · title: Cleo zero-day breach exposes 21,899 Western Alliance Bank customers
- 2026-09-25 · Western Alliance Bank · domain: westernalliancebank.com
- 2026-09-25 · Western Alliance Bank, 2025-03-14 · attack: ransomware
- 2026-09-25 · Western Alliance Bank, 2025-03-14 · discovered: 2025-01-27
- 2026-09-25 · Western Alliance Bank, 2025-03-14 · added
- 2026-09-25 · Western Alliance Bank · added