HackingGovernmentGovernmentCustomer Data InvolvedIdentity (basic)Government IDMediumContained

City of Middletown

bd_b7b2c1d83727f515 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 18, 2026

Filed

Jun 8, 2026

To disclose

21 days

Affected

3scope not determined

Linked

3 filings

Confidence

66%

Full breach record for City of Middletown →2 incidents on file

City of Middletown, Ohio, notified the New Hampshire Attorney General's Office of an unauthorized network access incident affecting approximately 3 residents. The breach occurred between July 29, 2025, and August 17, 2025, and was discovered on May 18, 2026. Compromised data included full names, Social Security numbers, and driver's license/state ID numbers. The City engaged external cybersecurity professionals, notified affected residents, and provided complimentary credit monitoring services.

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Incident timeline

undetected · 293 days

discovery → filing · 21 days

Jul 29, 2025

Begins

May 18, 2026

Discovered

Jun 8, 2026

Filed

vs. sector median

8 wks faster

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

HHS OCRbd_731427fbfb5df97d2026-06-03 · +5dVerified
Indiana State AGbd_ff470ad40662c7bb2026-06-03 · +5dVerified

Name: City of Middletown
norm: city of middletown

Name: City of Middletown
norm: city of middletown
Industry: Governmentllm

Discovered: May 18, 2026
Breach occurred: Jul 29, 2025 – Aug 17, 2025
Undetected for: 293 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 3, 2026
Affected individuals: 3scope not determined
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Initial access: exploit_public_facing

During the incident: Commenced a prompt and thorough investigation with external cybersecurity professionals
Provided the affected residents with written notification
Offering the residents with Social Security numbers impacted a complimentary membership with a credit monitoring service
Provided the affected residents with contact information for the FTC, and the major credit reporting agencies
Changes made: Continually evaluates and modifies its practices to enhance the security and privacy of the personal information it maintains
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 21 days(21 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

HHS OCRJun 3 · first

Indiana State AGJun 3 · first

New Hampshire State AG+5d · this page

Pattern: first filing Jun 3 (OH), last Jun 8 (NH) — a 5-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://mm.nh.gov/files/uploads/doj/remote-docs/city-middletown-ohio-20260608.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 8, 2026
Raw hash: 133653358467017c993b94568da5914c648d0971948a0957bf52e7881a428ba4

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityCity of Middletown

Victim entityCity of Middletown

Incidentdiscovered May 18, 2026

Stated responseCommenced a prompt and thorough investigation with external cybersecurity professionals

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov