DisclosureLens
GLOBALMalwareFinancial ServicesFinanceRansomwareCl0pRansom DemandedActor NamedData Leak ThreatenedData PublishedHigh

Western Alliance Bank

bd_103992033a4be168 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Jan 24, 2025

To disclose

—

Affected

Not disclosed

Linked

12 records

Confidence

50%
Full breach record for Western Alliance Bank →

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Cl0p on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.

Group activity: Financial ServicesDiscovered: 2025-01-24
View aggregator listing on ransomware.liveView merged incident timeline

Source: Ransomware.live

Company description · AI-generated by the aggregator, not the leak post

Western Alliance Bancorporation is a leading bank holding company in the US offering retail, commercial, and real estate banking services. Established in 1995, it operates through various divisions and subsidiaries across the nation. Western Alliance Bank provides lending, deposit, treasury management, and online banking solutions to consumers, small to larger businesses, and professional communities.

Incident timeline — mostly unverified

? — ?

Breach window unknown

Jan 24, 2025

Claim posted

—

Corroborated · see linked filings

This record's own dates cannot anchor compliance clocks; see the linked filings.

Claim → filing

—

Compliance clock

Not assessable

This leak-site claim is one of 12 records about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Show 6 more filings ↓up to 158d gap

Showing first 10 of 11 linked disclosures.

Filing propagation · 10 filings · 10 states

View merged incident ↗
California State AGMar 14 · first
Nebraska State AGMar 14 · first
Maryland State AGMar 14 · first
Montana State AGMar 14 · first
Massachusetts State AGMar 14 · first
Maine State AGMar 14 · first
Washington State AG+108d
Oregon State AG+108d
New Hampshire State AG+108d
Texas State AG+109d

Pattern: first filing Mar 14 (CA), last Jul 1 (TX) — a 109-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 11 — the full spread may be wider.

Evidence ladder

Leak-site claimThis record

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filing

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source ceiling

  • actor name
  • victim claim
  • ransom/leak status
  • discovery date
  • materiality
  • notification
  • affected count
  • confirmed data types
  • compliance clock

The ✕ fields stay blank until a regulatory filing or victim disclosure lands.