DisclosureLens
HackingManufacturingCustomer Data InvolvedIdentity (basic)Government IDPIIMediumContained

AMERICAN VANGUARD CORPORATION

bd_c92fd4e3d305d352 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 7, 2025

Filed

Jul 31, 2026

To disclose

34 weeks

Affected

1state residents only

Linked

4 filings

Confidence

66%
Full breach record for AMERICAN VANGUARD CORPORATION →

American Vanguard Corporation notified Massachusetts residents of a data breach involving unauthorized network access from November 10 to December 7, 2025. Suspicious activity was detected on December 7, 2025. The incident involved the exfiltration of personal information (PII). The company engaged third-party forensic experts and law enforcement, and is offering complimentary identity monitoring services to affected individuals.

Massachusetts clock✗ MA AG >90d34 weeks discovery → filing

Incident timeline

undetected · 27 days
discovery → filing · 34 weeks / 236 days

Nov 10, 2025

Begins

Dec 7, 2025

Discovered

Jul 31, 2026

Filed

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (1)

Regulatory filings (2) · sorted by filing gap

Filing propagation · 3 filings · 3 states

View merged incident ↗
Nebraska State AGJun 30 · first
Indiana State AGJun 30 · first
Massachusetts State AG+31d · this page

Pattern: first filing Jun 30 (NE), last Jul 31 (MA) — a 31-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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.