HackingGovernmentGovernmentCustomer Data InvolvedPIIHighContained

Winona County

bd_c95c5b96a03518fd · schema v1 · pii pii-v1

Severity

High

Discovered

Apr 16, 2026

Filed

May 12, 2026

To disclose

26 days

Affected · nationwide

6,1961 in this filing

Linked

5 filings

Confidence

66%

Full breach record for Winona County →2 incidents on file

Winona County (MN) reported an external system breach (hacking) occurring between January 18-22, 2026, discovered on April 16, 2026. The incident affected 6,196 individuals, including one Maine resident. The breach involved the acquisition of personal identifiers and government-issued IDs. Winona County provided written notification on May 12, 2026, and offered 12 months of credit and cyber monitoring services through IDX.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Apr 16, 2026 → Filed with AG May 12, 202626d ✓ ME AG ≤30d26 days 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 · 88 days

discovery → filing · 26 days

Jan 18, 2026

Begins

Apr 16, 2026

Discovered

May 12, 2026

Filed

This filing is one of 5 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Nebraska State AGbd_8cdf1e17adeab8532026-05-12Verified by operator
Indiana State AGbd_0dc45a1d5e2644b32026-05-07 · +5dCandidate
Massachusetts State AGbd_4f04d681b56f59262026-05-18 · +6dVerified by operator
New Hampshire State AGbd_d0844e449554c09f2026-05-18 · +6dVerified by operator

Name: Winona County
norm: winona county
Domain: winonacounty.gov

Name: Winona County
norm: winona county
Domain: winonacounty.gov
Industry: Governmentllm

Discovered: Apr 16, 2026
Breach occurred: Jan 18, 2026 – Jan 22, 2026
Undetected for: 88 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 12, 2026
Affected individuals: 6,196state + nationwide
Data types: Government IDIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Initial access: exploit_public_facing

During the incident: Sent written notification to affected individuals
Offered 12 months of IDX Credit and CyberScan monitoring, identity theft restoration assistance and insurance
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 26 days(26 days from discovery to filing)
Compliance flags: ME AG ≤30d · 26d
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: Apr 16, 2026
→ Filed with AG: May 12, 2026
26d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Apr 16, 2026 → Filed with AG: May 12, 2026	26d	30 days	ME AG ≤30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Indiana State AGMay 7 · first

Nebraska State AG+5d

Maine State AG+5d · this page

Massachusetts State AG+11d

New Hampshire State AG+11d

Pattern: first filing May 7 (IN), last May 18 (NH) — a 11-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-a1252b4f8318/50b02336-9b53-4da9-8706-12045af2e275.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 12, 2026
Raw hash: a4ac88fbbeaa291ca6d6c26d924c2a220d32410f0ce7d027b8014644282c08e9

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityWinona County

Victim entityWinona County

Incidentdiscovered Apr 16, 2026

Stated responseSent written notification to affected individuals

ComplianceME AG ≤30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov