HackingStolen CredentialsCustomer Data InvolvedPIIIdentity (basic)LowContained

McHenry County Conservation District

bd_675a31e55e5b0165 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jul 26, 2023

Filed

Aug 28, 2023

To disclose

5 weeks

Affected

Not disclosed

Linked

2 filings

Confidence

66%

Full breach record for McHenry County Conservation District →

McHenry County Conservation District notified consumers that an unauthorized third party accessed a single employee email account between May 15 and May 30, 2023. The attacker viewed personal information including names and addresses. The district secured the account, engaged forensic investigators, and offered one year of Experian IdentityWorks credit monitoring.

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Vermont clock⏱ VT AG >14 bday5 weeks discovery → filing

Incident timeline

undetected · 72 days

discovery → filing · 5 weeks / 33 days

May 15, 2023

Begins

Jul 26, 2023

Discovered

Aug 28, 2023

Filed

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

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Indiana State AGbd_e8a715cf6fe59d882023-08-28Verified

Name: McHenry County Conservation District
norm: mchenry county conservation district

Name: McHenry County Conservation District
norm: mchenry county conservation district

Discovered: Jul 26, 2023
Breach occurred: May 15, 2023 – May 30, 2023
Undetected for: 72 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 28, 2023
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Initial access: valid_credentials

During the incident: Promptly secured the email account
Began an internal investigation
Engaged a forensic security firm to investigate and confirm the security of our email and computer systems
Changes made: Evaluating steps to reduce the risk of this type of incident occurring in the future, including enhancing our technical security measures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(33 days from discovery to filing)
Compliance flags: VT AG >14 bday
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Indiana State AGAug 28 · first

Vermont State AGAug 28 · 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://ago.vermont.gov/document/2023-08-28-mchenry-county-conservation-district-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 28, 2023
Raw hash: caeb8f9864dbf6640affdbc7e3d2eb18816eea0ebc3ccce347cb84d184209dcd

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityMcHenry County Conservation District

Victim entityMcHenry County Conservation District

Incidentdiscovered Jul 26, 2023

Stated responsePromptly secured the email account

ComplianceVT AG >14 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov