MalwareFinancial ServicesFinanceRansomwareRansom DemandedData ExfiltratedData EncryptedCustomer Data InvolvedPIIIDENTITY_BASICIDENTITY_GOVERNMENTMediumContained
Great Plains Bank Corporation
bd_dc876070b235c24f · schema v1 · pii pii-v1
Full breach record for Great Plains Bank Corporation →Great Plains Bank Corporation (Aberdeen, SD) suffered a ransomware attack ~Nov 21, 2024, discovered Jan 6, 2025. Unauthorized party may have accessed names and Social Security numbers. 7,767 individuals affected total; 1 Maine resident. FBI notified; cybersecurity specialists engaged. Consumer notifications sent Feb 19, 2025; 12-month Experian IdentityWorks monitoring offered.
Maine clockDiscovered Jan 6, 2025 → Filed with AG Feb 19, 202544d ⏱ ME AG >30d6 weeks discovery → filing
⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1 affectedView incident
Source provenance
- Source URL
- https://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/2c82f29f-8ded-4cce-80bc-d2eaaf6d799b.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
- Filed at
- Feb 19, 2025
- Raw hash
- 3b7c70e2adf8d9658180b01dfcad6dc8f33287eb68cb0facb9d5c80cfb71fcbe
Reporting entity
- Name
- Great Plains Bank Corporationnorm: great plains bank
- Industry
- Financial Services
Victim entity
- Name
- Great Plains Bank Corporationnorm: great plains bank
- Industry
- Financial Services
- Industry
- Financial Servicesllm
Incident
- Discovered
- Jan 6, 2025
- Materiality determined
- —
- Notification sent
- Feb 19, 2025
- Affected individuals
- 1
- Data types
- PIIIDENTITY_BASICIDENTITY_GOVERNMENT
- Attack vector
- Ransomware
- MITRE ATT&CK
- T1486 Data Encrypted for Impact
- Threat actor
- ExternalFinancial
- Regulator citations
- FBI notified
Compliance
- Time to disclose
- 6 weeks(44 days from discovery to filing)
- Compliance flags
- ME AG >30d · 44d
- Discovery-date grounding
- unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
- Clock breakdown
Statute Window Elapsed Threshold Status Maine Discovered: Jan 6, 2025→ Filed with AG: Feb 19, 202544d 30 days (soft) ME AG >30d
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.