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Cyber Threat
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Ransomware victim Manufacturing

Black Hills Bentonite

Listed by Wallstreet on · organisation based in United States

bhbentonite.com

Disclosed
Aug 10, 2026
Leak-site listing date
Threat group
Wallstreet
55 victims listed
Country
United States
#1 most targeted
Sector
Manufacturing

ThreatAI analysis

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

Wallstreet listed Black Hills Bentonite on its dark web leak site on 10 August 2026. The Wyoming-based producer of high-quality sodium bentonite, along with lignite-related products, supplies global uses such as drilling fluids and environmental sealing.

About Black Hills Bentonite

Black Hills Bentonite LLC (bhbentonite.com) is a Wyoming-based producer of high-quality sodium bentonite, along with lignite-related products, supplying global industrial and commercial uses such as drilling fluids, environmental/civil engineering sealing, absorbents (including cat litter), and metal casting/foundry applications

Source record: ransomware.live

About the Wallstreet group

Wallstreet has listed 28 victims since June 2026.

Incident analysis

Black Hills Bentonite was listed by Wallstreet ransomware, a group with 55 victims recorded in this database. The listing appeared on the group's leak site on August 10, 2026.

Black Hills Bentonite is based in United States and operates in the Manufacturing sector. United States ranks #1 worldwide for ransomware disclosures, with 10,151 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.

Wallstreet 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files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished.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 Black Hills Bentonite attacked by ransomware?

Yes. Black Hills Bentonite was listed as a victim of the Wallstreet ransomware group on August 10, 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 Black Hills Bentonite?

Black Hills Bentonite was attacked by Wallstreet ransomware. Wallstreet is one of the most active ransomware groups, having claimed 55 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Black Hills Bentonite ransomware attack occur?

The ransomware attack on Black Hills Bentonite was disclosed on August 10, 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 Black Hills Bentonite ransomware attack?

The specific data stolen from Black Hills Bentonite 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, Black Hills Bentonite likely held sensitive business data, client information, and operational records.

How can organisations protect against Wallstreet attacks?

To defend against Wallstreet 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.