Bank of the West
bd_9f46f790366be395 · schema v1 · pii pii-v1
Full breach record for Bank of the West →10 incidents on fileBank of the West notified Montana customers of a security incident involving a contracted service provider. Unauthorized parties used compromised credentials to access employee email accounts at the vendor, potentially exposing business names and Social Security numbers. The bank engaged forensic investigators, notified law enforcement, and offered one year of credit monitoring.
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Incident timeline
Mar 2, 2018
Discovered
Aug 20, 2018
Filed
vs. sector median
+15 wks slower
Linked disclosures
Why this link?Regulatory filings (3) · sorted by filing gap
- California State AGbd_a9952dff3250661e2018-08-20Verified
- New Hampshire State AGbd_898f7df75b36945a2018-08-24 · +4dVerified
- Massachusetts State AGbd_1c0763a57a3216f42018-08-27 · +7dVerified
Filing propagation · 4 filings · 4 states
View merged incident ↗Pattern: first filing Aug 20 (CA), last Aug 27 (MA) — a 7-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.