Stockman Bank of Montana

Stockman Bank notified the New Hampshire Attorney General of a security incident involving one resident. Unauthorized access occurred May 30-31, 2023, via a vulnerability in the MOVEit file transfer tool used by vendor Progress Software. Personal information (name, etc.) of one NH resident was exfiltrated. Stockman engaged forensic investigators, implemented mitigations, and offered credit monitoring.

Stockman Bank notified customers of a cybersecurity incident involving its vendor, Progress Software. A vulnerability in the vendor's MOVEit file-sharing software was exploited by unauthorized individuals, leading to the exfiltration of personal information (names and other PII) from a small percentage of Stockman Bank customers. The bank engaged forensic investigators, secured its systems, and offered one year of complimentary credit monitoring via Experian IdentityWorks.

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.

Stockman Bank reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2023-08-08. 5 Massachusetts residents were affected. The report records the breach type as electronic.

Stockman Bank reported a data breach to the Indiana Attorney General. The breach occurred on 2023-05-28 and was reported on 2023-08-07. 7 Indiana residents were affected. 5,115 individuals affected in total.