Social EngineeringProfessional ServicesProfessional ServicesPretextingData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Eisen Machinery Inc

bd_f47b90c8af94342b · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 12, 2025

Filed

Jun 24, 2026

To disclose

28 weeks

Affected

Not disclosed

Linked

3 filings

Confidence

65%

Full breach record for Eisen Machinery Inc →

On December 12, 2025, Eisen, Inc. experienced a social engineering attack where a threat actor impersonated the California State Controller's Office to obtain a file containing unclaimed property compliance records. The file included names, addresses, emails, Social Security numbers, dates of birth, and unclaimed property balance information. Eisen, Inc. contained the incident, revoked access, and is providing 24 months of credit monitoring to affected individuals.

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California clockDiscovered Dec 12, 2025 → Notified Jun 24, 2026194d ✗ CA 60-day late28 weeks discovery → filing

Incident timeline

discovery → filing · 28 weeks / 194 days

Dec 12, 2025

Begins

Dec 12, 2025

Discovered

Jun 24, 2026

Filed

vs. sector median

+9 wks slower

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

Massachusetts State AGbd_3ae29966dab1856c2026-06-24Candidate
New Hampshire State AGbd_93075686bc85b4792026-06-24Verified

Name: Eisen Machinery Inc
norm: eisen machinery
Domain: eisenm.com

Name: Eisen Machinery Inc
norm: eisen machinery
Domain: eisenm.com
Industry: Professional Servicesllm

Discovered: Dec 12, 2025
Breach occurred: Dec 12, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 24, 2026
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Data elements: Social Security numberDate of birth
Attack vector: Unknown
MITRE ATT&CK: T1566 Phishing
Threat actor: External
Regulator citations: Notified governmental regulators
Initial access: phishing_link

During the incident: Revoked the unauthorized party's access to the file
Deleted the file from the sharing platform
Conducted a thorough investigation confirming no further data exposure
Implemented mandatory secondary verification protocols for all government data requests
Deployed specialized training on regulator impersonation tactics
Notified our third-party partner and governmental regulators
Providing 24 months of credit monitoring and identity theft restoration services through Experian at no cost
Changes made: Implemented mandatory secondary verification protocols for all government data requests
Deployed specialized training on regulator impersonation tactics
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 28 weeks(194 days from discovery to filing)
Compliance flags: CA 60-day late · 194d
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: Dec 12, 2025
→ Notified: Jun 24, 2026
194d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Dec 12, 2025 → Notified: Jun 24, 2026	194d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Massachusetts State AGJun 24 · first

New Hampshire State AGJun 24 · first

California State AGJun 24 · 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/sb24-625365
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 24, 2026
Raw hash: cb5f57a009b02b61bb2b7caaf1377a72c2cd4dc2accc15bd8f1a5a9b69a99ec1

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityEisen Machinery Inc

Victim entityEisen Machinery Inc

Incidentdiscovered Dec 12, 2025

Stated responseRevoked the unauthorized party's access to the file

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov