HackingFinancial ServicesFinanceVulnerability ExploitSupply Chain (3P Vendor)Customer Data InvolvedN-DayPIIIdentity (basic)LowContained

Sunflower Bank, National Association

bd_895de35e1cea98f0 · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Aug 15, 2023

To disclose

—

Affected

Not disclosed

Linked

8 filings

Confidence

76%

Full breach record for Sunflower Bank, National Association →

Sunflower Bank, N.A. was notified on or about May 31, 2023 by Progress Software Corporation of a vulnerability in MOVEit file transfer software, which the bank used for secure file transfers. The bank's MOVEit server was segmented from core systems. Potentially impacted data included names, and financial transaction-related information. The bank engaged outside experts, applied all available fixes, and offered affected individuals Experian credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

May 27, 2023

Begins

Aug 15, 2023

Filed

This filing is one of 8 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 (7) · sorted by filing gap

Montana State AGbd_b791064e55b0bfd82023-08-15Verified
New Hampshire State AGbd_ef42af6291b75a202023-08-15Verified
Indiana State AGbd_791c96ad5aceed032023-08-14 · +1dVerified
Massachusetts State AGbd_57054109e6719b1e2023-08-22 · +7dVerified

Show 3 more filings ↓up to 50d gap

SEC 8-Kbd_d36ee2ad177829e82023-07-14 · +32dVerified
New Hampshire State AGbd_46ae3c2793a327922023-10-02 · +48dVerified
California State AGbd_fea17e438a10a5c62023-10-04 · +50dVerified

Name: Sunflower Bank, National Association
norm: sunflower bank national

Name: Sunflower Bank, National Association
norm: sunflower bank national
Industry: Financial Servicesllm

Discovered: —
Breach occurred: May 27, 2023
Materiality determined: —
Notification sent: Aug 14, 2023
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1195 Supply Chain Compromise
Threat actor: External
Regulator citations: Reported incident to law enforcement
Third party: via Progress Software Corporation
Initial access: exploit_public_facing

During the incident: Enacted incident response protocols upon receiving notice from MOVEit
Engaged outside technical experts to investigate
Maintained regular contact with Progress Software
Implemented all fixes to the software that Progress Software issued
Continuing to closely monitor the system for any unusual activity
Reported this incident to law enforcement
Changes made: Implemented all fixes to the MOVEit software issued by Progress Software
Offering complimentary Experian IdentityWorks credit monitoring and $1 million identity theft insurance to affected individuals
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 8 filings · 5 states

View merged incident ↗

SEC 8-KJul 14 · first

Indiana State AG+31d

Montana State AG+32d

New Hampshire State AG+32d

California State AG+32d · this page

Massachusetts State AG+39d

New Hampshire State AG+80d

California State AG+82d

Pattern: first filing Jul 14, last Oct 4 (CA) — a 82-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/sb24-571902
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 15, 2023
Raw hash: 78ced8fe1efc2076632fde00ffcaecb3e0755a32f2d81229aaa57cfd855c4ba6

Linked disclosures

Regulatory filings (7) · sorted by filing gap

Reporting entitySunflower Bank, National Association

Victim entitySunflower Bank, National Association

IncidentThird-Party / Supply Chain

Stated responseEnacted incident response protocols upon receiving notice from MOVEit

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov