DisclosureLens
HackingFinancial ServicesFinanceSupply Chain (3P Vendor)Customer Data InvolvedIdentity (basic)Government IDHighResolved

Stockman Bank of Montana

bd_3facb6f42c9113c1 · schema v1 · pii pii-v1

Severity

High

Discovered

Aug 4, 2023

Filed

Aug 8, 2023

To disclose

4 days

Affected · nationwide

5,1154 in this filing

Linked

5 filings

Confidence

50%
Full breach record for Stockman Bank of Montana →

Stockman Bank reported a third-party data breach that occurred between May 30 and May 31, 2023, and was discovered on August 4, 2023. The breach affected 4 Maine residents, compromising their names and Social Security numbers. In response, the bank offered one year of credit monitoring, fraud consultation, and identity theft restoration services through Kroll.

Maine clockDiscovered Aug 4, 2023 → Filed with AG Aug 8, 20234d ✓ ME AG ≤30d4 days discovery → filing
⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 66 days
discovery → filing · 4 days

May 30, 2023

Begins

Aug 4, 2023

Discovered

Aug 8, 2023

Filed

vs. sector median

8 wks faster

This filing is one of 5 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 (4) · sorted by filing gap

Filing propagation · 5 filings · 5 states

View merged incident ↗
Indiana State AGAug 7 · first
New Hampshire State AG+1d
Montana State AG+1d
Massachusetts State AG+1d
Maine State AG+1d · this page

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.