MalwareGovernmentGovernmentRansomwareData EncryptedData ExfiltratedRansom DemandedIdentity (basic)LowContained

County of Rock, WI

bd_192453f7433b35f4 · schema v1 · pii pii-v1

Severity

Low

Discovered

Sep 29, 2023

Filed

Dec 1, 2023

To disclose

9 weeks

Affected

Not disclosed

Linked

5 filings

Confidence

64%

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

The County of Rock, WI experienced a ransomware event between September 22-30, 2023. Suspicious activity included system encryption and unauthorized access. The incident resulted in the unauthorized acquisition of personal information, including names. The County reported the incident to federal law enforcement and offered complimentary credit monitoring to affected individuals.

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Vermont clock⏱ VT AG >14 bday9 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 · 9 weeks / 63 days

Sep 22, 2023

Begins

Sep 29, 2023

Discovered

Dec 1, 2023

Filed

vs. sector median

2 wks faster

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

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Maine State AGbd_330061d609509a562023-12-01Candidate
Massachusetts State AGbd_8c549586308eb7752023-12-01Verified
Montana State AGbd_e2cb16da706f862e2023-12-01Verified
HHS OCRbd_d12bcaaf3e59647a2023-11-29 · +2dVerified

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: —
Affected individuals: Not disclosed
Data types: Identity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Reported this incident to federal law enforcement

During the incident: Launched an investigation into the nature and scope of the activity
Undertook a comprehensive review of the affected data
Reviewed and enhanced existing policies and procedures related to network security
Reported this incident to federal law enforcement
Notifying individuals and regulators as required
Offering affected individuals access to complimentary credit monitoring
Changes made: Enhancing existing policies and procedures related to network security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(63 days from discovery to filing)
Compliance flags: VT AG >14 bday
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.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

HHS OCRNov 29 · first

Maine State AG+2d

Massachusetts State AG+2d

Montana State AG+2d

Vermont State AG+2d · 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://ago.vermont.gov/document/2023-12-01-county-rock-wi-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 1, 2023
Raw hash: d2cff106c69dcb1a66b3ec3dd830696f1bc4d49f7f4d90dab65c7e1a7c196fb7

Linked disclosures

Regulatory filings (4) · 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

ComplianceVT AG >14 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov