MalwareGovernmentGovernmentRansomwareData EncryptedData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDHighContained

County of Rock, WI

bd_1bdb3ae6836cc025 · schema v1 · pii pii-v1

Severity

High

Discovered

Sep 29, 2023

Filed

Oct 9, 2024

To disclose

13 months

Affected · nationwide

22,2591 in this filing

Linked

2 filings

Confidence

65%

Full breach record for County of Rock, WI →2 incidents on file

County of Rock, WI reported a ransomware event where unauthorized access occurred between Sept 22-30, 2023, resulting in data encryption and acquisition. Discovered Sept 29, 2023. Affected data included names and SSNs. 22,259 individuals affected total, including 1 Maine resident. Notifications sent Oct 9, 2024. Credit monitoring offered.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Sep 29, 2023 → Filed with AG Oct 9, 2024376d ✗ ME AG >90d13 months 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 · 13 months / 376 days

Sep 22, 2023

Begins

Sep 29, 2023

Discovered

Oct 9, 2024

Filed

vs. sector median

+43 wks slower

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

New Hampshire State AGbd_2a8f384d2a32e9272024-10-09Verified

Name: County of Rock, WI
norm: county of rock wi

Name: County of Rock, WI
norm: county of rock wi
Industry: Governmentllm

Discovered: Sep 29, 2023
Breach occurred: Sep 22, 2023 – Sep 30, 2023
Undetected for: 7 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 9, 2024
Affected individuals: 22,259state + nationwide
Data types: Identity (basic)Government ID
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified federal law enforcementProviding written notice to relevant regulators

During the incident: Launched an investigation into the nature and scope of the activity
Undertook a comprehensive review of the affected data
Notified federal law enforcement regarding the event
Provided access to credit monitoring services for twelve (12) months
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Providing written notice of this incident to relevant regulators
Providing written notice to the three major credit reporting agencies
Changes made: Implementing additional safeguards and training to its employees
Reviewing and enhancing existing policies and procedures related to network security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 13 months(376 days from discovery to filing)
Compliance flags: ME AG >90d · 376dME resident >180d · 376d
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: Sep 29, 2023
→ Filed with AG: Oct 9, 2024
376d 90 days ME AG >90d
Maine
Discovered: Sep 29, 2023
→ Notified: Oct 9, 2024
376d 180 days ME resident >180d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Sep 29, 2023 → Filed with AG: Oct 9, 2024	376d	90 days	ME AG >90d
Maine	Discovered: Sep 29, 2023 → Notified: Oct 9, 2024	376d	180 days	ME resident >180d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

New Hampshire State AGOct 9 · first

Maine State AGOct 9 · 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/b2633588-36cf-453b-a56f-859be08f5c53.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 9, 2024
Raw hash: 4ecf381accd475fada093ac81cc0555d08a2f7448f997f97b027292ed089acaa

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityCounty of Rock, WI

Victim entityCounty of Rock, WI

Incidentdiscovered Sep 29, 2023

Stated responseLaunched an investigation into the nature and scope of the activity

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov