HackingHealthcareHealthcareCustomer Data InvolvedIdentity (basic)Government IDFinancial accountCredentialsHighContained

Chiesi USA, Inc.

bd_10b714aa1a2aa745 · schema v1 · pii pii-v1

Severity

High

Discovered

Aug 28, 2025

Filed

Dec 22, 2025

To disclose

17 weeks

Affected · nationwide

1,8359 in this filing

Linked

5 filings

Confidence

67%

Full breach record for Chiesi USA, Inc. →

Chiesi USA Inc. reported a data breach to the New Hampshire Attorney General on December 22, 2025. The company detected unauthorized access to its U.S. systems on August 28, 2025. The incident affected approximately 1,835 individuals, including 9 New Hampshire residents. Personal information accessed included names, SSNs, driver's license numbers, passport numbers, medical information, financial account information, and usernames/passwords. Chiesi engaged third-party cybersecurity specialists, secured its environment, and is providing 24 months of credit monitoring through Experian.

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Incident timeline

discovery → filing · 17 weeks / 116 days

Aug 28, 2025

Discovered

Dec 22, 2025

Filed

vs. sector median

+5 wks slower

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_30e0baca8a783e6a2025-12-22Candidate
Nebraska State AGbd_6b4dc670fb369d6a2025-12-22Verified
Massachusetts State AGbd_bb041de9a9e094f92025-12-22Verified
Vermont State AGbd_e7cc2b535ec681302025-12-22Verified

Name: Chiesi USA, Inc.
norm: chiesi usa

Name: Chiesi USA, Inc.
norm: chiesi usa
Industry: Healthcarellm

Discovered: Aug 28, 2025
Materiality determined: —
Notification sent: Dec 22, 2025
Affected individuals: 1,835state + nationwide
Data types: Identity (basic)Government IDFinancial accountCredentials
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: Notified New Hampshire Attorney General
Initial access: exploit_public_facing

During the incident: Initiated an investigation
Engaged third-party cybersecurity specialists
Secured our environment
Implemented additional technical safeguards
Provided 24 months of credit monitoring and identity restoration services through Experian
Changes made: Implemented additional technical safeguards to further enhance the security of our systems
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 weeks(116 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Maine State AGDec 22 · first

Nebraska State AGDec 22 · first

Massachusetts State AGDec 22 · first

Vermont State AGDec 22 · first

New Hampshire State AGDec 22 · 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://mm.nh.gov/files/uploads/doj/remote-docs/chiesi-usa-20251222.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 22, 2025
Raw hash: 93b58a8701590acb6169fc2fc39d8d694e1435b021729abb1888000cbc4cb748

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityChiesi USA, Inc.

Victim entityChiesi USA, Inc.

Incidentdiscovered Aug 28, 2025

Stated responseInitiated an investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov