HackingTechnologyInformationData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDHealth (basic)Financial accountMediumContained

Advantest America, Inc.

bd_40b14c6ef52d8e05 · schema v1 · pii pii-v2

Severity

Medium

Discovered

Feb 1, 2026

Filed

Oct 1, 2026

To disclose

—

Affected

14state residents only

Linked

3 filings

Confidence

67%

Full breach record for Advantest America, Inc. →

Advantest Corporation notified individuals of a cybersecurity incident in February 2026 where an unauthorized third party accessed systems and extracted PII, including SSNs, financial info, and medical data. The incident was contained, systems restored, and 18 months of credit monitoring offered.

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Incident timeline

Feb 1, 2026

Discovered

Oct 1, 2026

Filed

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

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Vermont State AGbd_b38ece6499b093162026-10-05 · +4dCandidate
California State AGbd_d5d0f539a52ef6602026-10-05 · +4dVerified

Name: Advantest America, Inc.
norm: advantest america

Name: Advantest America, Inc.
norm: advantest america
Industry: Technologyllm

Discovered: Feb 1, 2026
Materiality determined: —
Notification sent: Oct 6, 2026
Affected individuals: 14state-resident count only
Data types: Identity (basic)Government IDHealth (basic)Financial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Notified the appropriate international authorities, including law enforcement

During the incident: Took potentially affected systems and additional systems offline
Implemented enhanced security measures
Strengthened monitoring capabilities
Reinforced internal controls
Notified the appropriate international authorities, including law enforcement
Offering 18 months of free credit and web monitoring services provided by Kroll
Changes made: Implemented enhanced security measures
Strengthened monitoring capabilities
Reinforced internal controls
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 · 3 filings · 3 states

View merged incident ↗

Massachusetts State AGOct 1 · first · this page

Vermont State AG+4d

California State AG+4d

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/2026-1718-advantest-america-inc/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: 9ee1aa2492e0bb1944ce3019324881d826addafc326ccc7ad6e9025f58c6775d

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityAdvantest America, Inc.

Victim entityAdvantest America, Inc.

Incidentdiscovered Feb 1, 2026

Stated responseTook potentially affected systems and additional systems offline

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov