HackingGovernmentGovernmentCustomer Data InvolvedIdentity (basic)Government IDMediumContained

City of Leavenworth, Kansas

bd_8587771dc677c73b · schema v1 · pii pii-v2

Severity

Medium

Discovered

—

Filed

Oct 1, 2026

To disclose

—

Affected

4state residents only

Confidence

69%

Full breach record for City of Leavenworth, Kansas →

City of Leavenworth, Kansas notified Massachusetts residents that an unauthorized party gained access to internal systems between November 18-19, 2025. The accessed system contained full names and Social Security numbers. The City is offering complimentary identity monitoring through Kroll. No identity theft has been reported to date.

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Incident timeline

Nov 18, 2025

Begins

Oct 1, 2026

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed4 affectedView incident

Name: City of Leavenworth, Kansas
norm: city of leavenworth kansas

Name: City of Leavenworth, Kansas
norm: city of leavenworth kansas
Industry: Governmentllm

Discovered: —
Breach occurred: Nov 18, 2025 – Nov 19, 2025
Materiality determined: —
Notification sent: —
Affected individuals: 4state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unknown
Threat actor: External

During the incident: Offering complimentary Kroll identity monitoring
Source: Quoted from the filing itself, not independently verified.

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://www.mass.gov/doc/2026-1705-city-of-leavenworth-ks/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 1, 2026
Raw hash: 20dfb16587048bf6cc707a1a414180dcda47a3bc89ff41b3d6fb8e52ade8c71a

Reporting entityCity of Leavenworth, Kansas

Victim entityCity of Leavenworth, Kansas

IncidentUnknown

Stated responseOffering complimentary Kroll identity monitoring

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov