HackingIdentity (basic)LowContained

Chiesi USA, Inc.

bd_6b4dc670fb369d6a · schema v1 · pii pii-v2

Severity

Low

Discovered

Aug 28, 2025

Filed

Dec 22, 2025

To disclose

—

Affected

Not disclosed

Linked

5 filings

Confidence

65%

Full breach record for Chiesi USA, Inc. →

Chiesi USA, Inc. reported a data security incident affecting Nebraska residents. On August 28, 2025, the company learned of unauthorized access to its U.S.-based systems resulting from an IT security issue impacting internal infrastructure. The breach involved names combined with an extra identifier (redacted). Chiesi engaged third-party cybersecurity specialists, secured the environment, and provided 24 months of credit monitoring via Experian. Notices were sent on December 22, 2025.

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Incident timeline

Aug 28, 2025

Discovered

Dec 22, 2025

Filed

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

New Hampshire State AGbd_10b714aa1a2aa7452025-12-22Verified
Maine State AGbd_30e0baca8a783e6a2025-12-22Candidate
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

Discovered: Aug 28, 2025
Materiality determined: —
Notification sent: Dec 22, 2025
Affected individuals: Not disclosed
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Initial access: exploit_public_facing

During the incident: Secured our environment and completed our investigation in partnership with third-party cybersecurity specialists
Implemented additional technical safeguards to further enhance the security of our systems and the information in our possession and to help prevent IT security incidents from happening in the future
Providing 24 months of credit monitoring and identity restoration services through Experian at no cost to you
Changes made: Implemented additional technical safeguards to further enhance the security of our systems and the information in our possession and to help prevent IT security incidents from happening in the future
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.

Filing propagation · 5 filings · 5 states

View merged incident ↗

New Hampshire State AGDec 22 · first

Maine State AGDec 22 · first

Massachusetts State AGDec 22 · first

Vermont State AGDec 22 · first

Nebraska 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://nebraska.gov/ago/data-breach/documents/ad6f2d10-1eeb-4922-87b0-b77424580adb.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: ed648ab52c0b3b97e2247355b6cb671b6652edf2dc667cf7d9bd4ef0bc4e131e

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityChiesi USA, Inc.

Victim entityChiesi USA, Inc.

Incidentdiscovered Aug 28, 2025

Stated responseSecured our environment and completed our investigation in partnership with third-party cybersecurity specialists

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov