HackingGovernmentGovernmentStolen CredentialsTargetedPIIIdentity (basic)LowContained

City of Polson, Montana

bd_552b787830bba9a1 · schema v1 · pii pii-v1

Severity

Low

Discovered

Mar 12, 2024

Filed

Mar 26, 2024

To disclose

14 days

Affected

69state residents only

Confidence

65%

Full breach record for City of Polson, Montana →

City of Polson, Montana notified individuals that an unauthorized actor accessed a corporate email account between July 6-23, 2023. The City discovered the incident on March 12, 2024. The actor may have accessed full names. The City offered complimentary Experian identity theft protection services.

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Incident timeline

undetected · 250 days

discovery → filing · 14 days

Jul 6, 2023

Begins

Mar 12, 2024

Discovered

Mar 26, 2024

Filed

vs. sector median

9 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed69 affectedView incident

Name: City of Polson, Montana
norm: city of polson montana

Name: City of Polson, Montana
norm: city of polson montana
Industry: Governmentllm

Discovered: Mar 12, 2024
Breach occurred: Jul 6, 2023 – Jul 23, 2023
Undetected for: 250 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 69state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Commenced a prompt and thorough investigation with external cybersecurity professionals
Offering a complimentary membership of identity theft protection services through Experian
Changes made: Continually evaluate and modify practices and internal controls to enhance the security and privacy of your information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 14 days(14 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-1223.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 26, 2024
Raw hash: 8ba8694034a6e41deab92c9763aae5c5b1c48abfd28d9fd07ab5d2d33db5a940

Reporting entityCity of Polson, Montana

Victim entityCity of Polson, Montana

Incidentdiscovered Mar 12, 2024

Stated responseCommenced a prompt and thorough investigation with external cybersecurity professionals

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov