MalwareGovernmentGovernmentRansomwareStolen CredentialsData ExfiltratedTargetedCustomer Data InvolvedIdentity (basic)Government IDHighContained

Mower County

bd_22c9b139716c204a · schema v1 · pii pii-v1

Severity

High

Discovered

Jun 18, 2025

Filed

Dec 3, 2025

To disclose

24 weeks

Affected · nationwide

27,0641 in this filing

Linked

2 filings

Confidence

66%

Full breach record for Mower County →

Mower County, Minnesota, experienced a ransomware attack between June 11 and June 18, 2025. The incident involved unauthorized access and data exfiltration affecting approximately 27,064 individuals, including one Maine resident. The County detected the ransomware on June 18, 2025, and notified affected individuals on December 3, 2025. Identity monitoring services were offered.

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Maine clockDiscovered Jun 18, 2025 → Filed with AG Dec 3, 2025168d ✗ ME AG >90d24 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.

Incident timeline

undetected · 7 days

discovery → filing · 24 weeks / 168 days

Jun 11, 2025

Begins

Jun 18, 2025

Discovered

Dec 3, 2025

Filed

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Indiana State AGbd_ccc44c03fb5939d32025-12-03Verified

Name: Mower County
norm: mower county

Name: Mower County
norm: mower county
Industry: Governmentllm

Discovered: Jun 18, 2025
Breach occurred: Jun 11, 2025 – Jun 18, 2025
Undetected for: 7 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 3, 2025
Affected individuals: 27,064state + nationwide
Data types: Identity (basic)Government ID
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: notified Minnesota IT Serviceswill notify all appropriate state regulators
Initial access: valid_credentials

During the incident: Launched an investigation with assistance from nationally recognized cybersecurity and data forensics consultants
Secured our network
Alerted federal law enforcement
Conducted a thorough review of the impacted data
Deployed security tools to enhance detection and accelerate response to cyber incidents
Actively monitoring our network using end point detection tools to help ensure containment
Conducting an enterprise-wide password reset
Notified Minnesota IT Services
Offering complimentary identity monitoring services
Changes made: Deployed security tools to enhance detection and accelerate response to cyber incidents
Actively monitoring our network using end point detection tools to help ensure containment
Conducting an enterprise-wide password reset
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 weeks(168 days from discovery to filing)
Compliance flags: ME AG >90d · 168dME resident >60d · 168d
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: Jun 18, 2025
→ Filed with AG: Dec 3, 2025
168d 90 days ME AG >90d
Maine
Discovered: Jun 18, 2025
→ Notified: Dec 3, 2025
168d 60 days (analyst band; statutory cap is 30 days) ME resident >60d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jun 18, 2025 → Filed with AG: Dec 3, 2025	168d	90 days	ME AG >90d
Maine	Discovered: Jun 18, 2025 → Notified: Dec 3, 2025	168d	60 days (analyst band; statutory cap is 30 days)	ME resident >60d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Indiana State AGDec 3 · first

Maine State AGDec 3 · first · 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.

Source URL: https://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/0c87aa02-845a-48a5-b65c-5dad59764a10.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 3, 2025
Raw hash: f090c9b8e1e7b909a8064d02683a1f9a91f44f62f00e7f203ce47da22895a2fd

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityMower County

Victim entityMower County

Incidentdiscovered Jun 18, 2025

Stated responseLaunched an investigation with assistance from nationally recognized cybersecurity and data forensics consultants

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov