MalwareGovernmentGovernmentRansomwareData ExfiltratedRansom DemandedTargetedIdentity (basic)Government IDHighContained

Union County, Ohio

bd_e13fd488600b1f81 · schema v1 · pii pii-v1

Severity

High

Discovered

Aug 25, 2025

Filed

Sep 24, 2025

To disclose

4 weeks

Affected · nationwide

45,4872 in this filing

Linked

3 filings

Confidence

66%

Full breach record for Union County, Ohio →

Union County, Ohio reported a ransomware incident where attackers accessed the network from May 6 to May 18, 2025. The breach was discovered on August 25, 2025, after forensic review confirmed data exfiltration. Approximately 45,487 individuals were affected, including 2 Maine residents. The County engaged third-party forensic consultants, alerted federal law enforcement, reset passwords, and enhanced network security. Notices were sent on September 24, 2025.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Aug 25, 2025 → Filed with AG Sep 24, 202530d ✓ ME AG ≤30d4 weeks 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 · 111 days

discovery → filing · 4 weeks / 30 days

May 6, 2025

Begins

Aug 25, 2025

Discovered

Sep 24, 2025

Filed

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Montana State AGbd_2902fd2c45650c272025-09-24Candidate
New Hampshire State AGbd_c253643f9c1cb7922025-10-06 · +12dVerified

Name: Union County, Oregon
norm: union county oregon

Name: Union County, Ohio
norm: union county ohio
Industry: Governmentllm

Discovered: Aug 25, 2025
Breach occurred: May 6, 2025 – May 18, 2025
Undetected for: 111 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 24, 2025
Affected individuals: 45,487state + 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: The County will notify all appropriate state regulators regarding this incident

During the incident: Launched an investigation with assistance from nationally recognized third-party cybersecurity and data forensics consultants
Alerted federal law enforcement
Changes made: Deployed security tools to enhance detection and accelerate response to cyber incidents
Continuing to actively monitor its network using end point detection tools
Conducted an enterprise-wide password reset
Strengthened restrictions for external network access
Evaluating steps to further bolster our cyber defenses
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 weeks(30 days from discovery to filing)
Compliance flags: ME AG ≤30d · 30d
Discovery-date grounding: 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.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Aug 25, 2025
→ Filed with AG: Sep 24, 2025
30d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Aug 25, 2025 → Filed with AG: Sep 24, 2025	30d	30 days	ME AG ≤30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Montana State AGSep 24 · first

Maine State AGSep 24 · first · this page

New Hampshire State AG+12d

Pattern: first filing Sep 24 (MT), last Oct 6 (NH) — a 12-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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/f7a9a409-190a-4ab4-b1df-cafd3eafefe0.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 24, 2025
Raw hash: a75e5668b116e79da602af4af6816b65b6a9f8fbfdcd341e74d1dfea5b5be060

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityUnion County, Oregon

Victim entityUnion County, Ohio

Incidentdiscovered Aug 25, 2025

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

ComplianceME AG ≤30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov