AMERICAN VANGUARD CORPORATION
bd_f2c7a1030af0f992 · schema v1 · pii pii-v1
Full breach record for AMERICAN VANGUARD CORPORATION →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Osiris on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.
Source: Ransomware.live
Post text · scraped from the leak site
American Vanguard Corporation is a U.S.-based company specializing in agricultural chemicals, primarily focused on crop protection products like herbicides, insecticides, fungicides, and fumigants. Founded in 1969 and headquartered in Newport Beach, California, the company markets products under its AMVAC brand and other specialized labels, serving global agricultural markets. Through a combination of research and development, strategic acquisitions, and a focus on sustainable practices, American Vanguard aims to enhance crop yields while minimizing environmental impact. It invests in greener alternatives to traditional chemicals and emphasizes innovation in pest control solutions. As a publicly traded company (NYSE: AVD), its financial performance is closely tied to agricultural trends and regulatory changes within the industry.
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Jan 9, 2026
Claim posted
—
Corroborated · see linked filings
Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.
Claim → filing
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Compliance clock
Not assessable
Linked disclosures
Why this link?Regulatory filings (3) · sorted by filing gap
- Nebraska State AGbd_6fae5b83538538d22026-06-30 · +172dVerified
- Indiana State AGbd_ed7bdc1d47811c7a2026-06-30 · +172dCandidate
- Massachusetts State AGbd_c92fd4e3d305d3522026-07-31 · +203dVerified
Filing propagation · 4 filings · 3 states
View merged incident ↗Pattern: first filing Jan 9, last Jul 31 (MA) — a 203-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.
Source ceiling
- actor name
- victim claim
- ransom/leak status
- discovery date
- materiality
- notification
- affected count
- confirmed data types
- compliance clock
The ✕ fields stay blank until a regulatory filing or victim disclosure lands.
osiris
According to ransomware.live, Osiris is a ransomware-as-a-service operation first observed in November 2025 that uses a Bring Your Own Vulnerable Driver (BYOVD) technique to disable endpoint detection tools before deploying hybrid ECC + AES-128-CTR encryption; Symantec researchers linked its operators to former INC ransomware affiliates.