HackingTechnologyInformationCustomer Data InvolvedPIIIdentity (basic)LowContained

AXT, INC.

bd_f16b9b0f77744222 · schema v1 · pii pii-v1

Severity

Low

Discovered

Apr 8, 2025

Filed

May 20, 2025

To disclose

6 weeks

Affected

Not disclosed

Linked

3 filings

Confidence

65%

Full breach record for AXT, INC. →2 incidents on file

AXT, Inc. detected a network compromise by an unauthorized third party on April 8, 2025. The incident potentially affected personal information including names and addresses. AXT secured the environment, engaged forensic experts, and notified law enforcement. Complimentary identity monitoring is being offered to affected individuals.

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California clockDiscovered Apr 8, 2025 → Notified May 20, 202542d ✓ CA 60-day OK6 weeks discovery → filing

Incident timeline

discovery → filing · 6 weeks / 42 days

Apr 8, 2025

Begins

Apr 8, 2025

Discovered

May 20, 2025

Filed

vs. sector median

13 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

Indiana State AGbd_083281a62100f2422025-05-20Verified
Nebraska State AGbd_3914d6bece779d6a2025-05-20Verified

Name: AXT, INC.
norm: axt

Name: AXT, INC.
norm: axt
Industry: Technologyllm

Discovered: Apr 8, 2025
Breach occurred: Apr 8, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 20, 2025
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Communicated with law enforcement regarding this incident

During the incident: Secured and remediated the compromise
Engaged additional third-party experts
Commenced an investigation
Hardened and enhanced our network security
Conducted a digital forensic investigation
Communicated with law enforcement regarding this incident
Secured the services of Experian IdentityWorks to provide complimentary identity monitoring
Changes made: Enhancing our cyber preparedness through additional awareness training
Updating our procedures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(42 days from discovery to filing)
Compliance flags: CA 60-day OK · 42d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Apr 8, 2025
→ Notified: May 20, 2025
42d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Apr 8, 2025 → Notified: May 20, 2025	42d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Indiana State AGMay 20 · first

Nebraska State AGMay 20 · first

California State AGMay 20 · 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://oag.ca.gov/ecrime/databreach/reports/sb24-603009
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 20, 2025
Raw hash: cc6580833f98e1964ad952b47b58589cf37d73333e3533fac96795a9c0eab07d

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityAXT, INC.

Victim entityAXT, INC.

Incidentdiscovered Apr 8, 2025

Stated responseSecured and remediated the compromise

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov