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Cyber Threat
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Ransomware victim Manufacturing

American Vanguard

Listed by Osiris on · organisation based in United States

american-vanguard.com

Disclosed
Jan 9, 2026
Leak-site listing date
Threat group
Osiris
10 victims listed
Country
United States
#1 most targeted
Sector
Manufacturing

ThreatAI analysis

Compiled from this incident record and the threat intelligence profile for Osiris. Figures and technique mappings are quoted from the source data, not inferred.

About the Osiris group

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. Osiris has listed 2 victims since December 2025.

Incident analysis

American Vanguard was listed by Osiris ransomware, a group with 10 victims recorded in this database. The listing appeared on the group's leak site on January 9, 2026.

American Vanguard is based in United States and operates in the Manufacturing sector. United States ranks #1 worldwide for ransomware disclosures, with 10,481 victims in this database.

Sector context. Manufacturing companies are frequently targeted because production downtime directly translates to financial loss. Ransomware operators exploit this time-sensitivity to demand higher ransoms and faster payment.

Osiris typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was American Vanguard attacked by ransomware?

Yes. American Vanguard was listed as a victim of the Osiris ransomware group on January 9, 2026. The organisation is based in United States and operates in the Manufacturing sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked American Vanguard?

American Vanguard was attacked by Osiris ransomware. Osiris is one of the most active ransomware groups, having claimed 10 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the American Vanguard ransomware attack occur?

The ransomware attack on American Vanguard was disclosed on January 9, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the American Vanguard ransomware attack?

The specific data stolen from American Vanguard has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Manufacturing organisation, American Vanguard likely held sensitive business data, client information, and operational records.

How can organisations protect against Osiris attacks?

To defend against Osiris and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.