HackingFinancial ServicesFinanceVulnerability ExploitSupply Chain (3P Vendor)Customer Data InvolvedZero-DayIdentity (basic)Government IDMediumContained

Umpqua Bank

bd_d3b7a25fe28a7b9b · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 21, 2023

Filed

Aug 11, 2023

To disclose

7 weeks

Affected

Not disclosed

Linked

6 filings

Confidence

65%

Full breach record for Umpqua Bank →

Umpqua Bank notified California residents that their names and Social Security numbers were accessed due to a third-party vendor's exposure in the global MOVEit Transfer cybersecurity incident. The vendor uses Progress Software's MOVEit Transfer tool, which had a previously unknown vulnerability reported on May 31, 2023. The breach date is listed as May 27, 2023. Umpqua was notified by the vendor on June 21, 2023. No banking information was involved. The bank is offering 24 months of identity monitoring.

J jump to incidentP pin to compareR raw source

California clockDiscovered Jun 21, 2023 → Notified Jun 22, 20231d ✓ CA 60-day OK7 weeks discovery → filing

Incident timeline

undetected · 25 days

discovery → filing · 7 weeks / 51 days

May 27, 2023

Begins

Jun 21, 2023

Discovered

Aug 11, 2023

Filed

vs. sector median

3 wks faster

This filing is one of 6 filings about the same incident.View merged incident

Part of Progress Software Corporation supply-chain incident (2023) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Indiana State AGbd_3d603af54d5cb3992023-08-11Verified
Maine State AGbd_d739cdfb0d8e16a82023-08-11Verified
Washington State AGbd_e9edd427ec1aee582023-08-11Verified
New Hampshire State AGbd_2976eb4a9bce87f52023-08-18 · +7dVerified

Show 1 more filing ↓up to 45d gap

SEC 8-Kbd_4d92681387db77792023-06-27 · +45dVerified

Name: Umpqua Bank
norm: umpqua bank

Name: Umpqua Bank
norm: umpqua bank
Industry: Financial Servicesllm

Discovered: Jun 21, 2023
Breach occurred: May 27, 2023
Undetected for: 25 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 22, 2023
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1195 Supply Chain Compromise
Threat actor: External
Initial access: supply_chain

During the incident: Suspended use of the MOVEit Transfer tool
Launched an investigation into potential exposure among third-party service providers
Worked with vendor to ensure vulnerability was resolved
Validated security using a third-party forensics firm
Notified law enforcement agencies
Offered 24 months of identity monitoring and theft resolution services
Changes made: Implemented steps to further protect customer data
Vendor implemented software patch to remediate the issue
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(51 days from discovery to filing)
Compliance flags: CA 60-day OK · 1d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Jun 21, 2023
→ Notified: Jun 22, 2023
1d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Jun 21, 2023 → Notified: Jun 22, 2023	1d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 5 states

View merged incident ↗

SEC 8-KJun 27 · first

Indiana State AG+45d

Maine State AG+45d

Washington State AG+45d

California State AG+45d · this page

New Hampshire State AG+52d

Pattern: first filing Jun 27, last Aug 18 (NH) — a 52-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

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

Press / market report

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

State AG / regulator filingThis record

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

SEC 8-K / victim statement

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

Source URL: https://oag.ca.gov/ecrime/databreach/reports/sb24-571656
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 11, 2023
Raw hash: 5138778c0907c7f90522ed952c6d88d094074c41bc54f09d09d42486f50dac20

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityUmpqua Bank

Victim entityUmpqua Bank

Incidentdiscovered Jun 21, 2023

Stated responseSuspended use of the MOVEit Transfer tool

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov