Back to overview
Confidence MediumSep 5, 2025montereymushrooms.com

Monterey Mushrooms hit by INC ransomware, employee data exposed

PatternExternal actor · Malware · Confidentiality impact

Monterey Mushrooms, LLC, a major U.S. mushroom producer, was hit by a cyberattack between August 2 and August 7, 2025. The INC ransomware group claimed responsibility and posted stolen data details to their dark web site around September 5, 2025. An unauthorized actor accessed the company's servers, compromising personally identifiable information of employees, including names, Social Security numbers, and in some cases, driver's license or passport numbers. The company secured its network, launched an investigation, and offered credit monitoring services to those affected.

Signal date
Sep 5, 2025
Updated
Jun 25, 2026
Confidence
Medium
Sources
2 sources

Signal context

First seen: Sep 5, 2025

Last updated: Jun 25, 2026

Status: Public signal

Key points

  • Affected individuals: Employees.
  • Data exposed: Names, Social Security numbers, and in limited cases, driver's license or passport numbers.
  • Cause: Ransomware attack by INC ransomware group.

Signal analysis

Beta

It helps compare this signal with other published signals without treating the labels as final determinations.

Affected organization
Montereymushrooms logo
Montereymushrooms

Likely country: Location not provided

Threat source
Malware activity

The feed marks multiple actor roles. Treat this as a review signal rather than a final attribution.

  • Source type: outside the affected organization
  • Source type: possible insider or internal misuse
Business impact
Potential operational disruption

Impact area: Confidentiality, Availability

Likely asset: User or customer data

Trend context
23 signals with similar action pattern
  • 1 signal in the same sector
  • 100 signals with the same likely impact area
  • 1 signal linked to this organization/domain
Mentioned entities
MontereymushroomsData DisclosureMonterey MushroomsINCLLCU.SThe INCAffectedNamesCause

External sources

Related signals

Grouped by why the signal is relevant.

eogb.co.uk logoEogbJun 28, 2026
Same action patternSame impact area

eogb.co.uk Hit by Stormous Ransomware Group

eogb.co.uk, a UK-based organization, was claimed as a victim by the Stormous ransomware group. The incident was discovered on June 28, 2026, at 21:29 UTC, with deep access to Microsoft Dynamics GP, internal legal documents, partnership agreements, customer contracts, operational spreadsheets, financial reports, and executive documents.

ahisd.net logoAhisdJun 26, 2026
Same action patternSame impact area

Alamo Heights ISD Reports Data Breach Following Ransomware Attack

Alamo Heights Independent School District (ISD) reported a data breach impacting over 26,000 people, disclosed to the Texas Attorney General's office on June 25, 2026 (published June 26, 2026 UTC). The breach was linked to a ransomware attack by the Qilin group, which occurred on April 9, 2026. The compromised information included names, Social Security numbers, driver's license numbers, and bank and medical information.

challenge-mfg.com logoChallenge MfgJun 26, 2026
Same action patternSame impact area

Challenge Manufacturing Data Breach Exposes Social Security Numbers

Challenge Manufacturing, an automotive manufacturing company, disclosed a data breach to the Texas Attorney General on June 26, 2026. The Chaos ransomware group claimed responsibility on May 17, 2026, stating they obtained 270 GB of data from the company's systems.

viennaairport.com logoViennaairportJun 23, 2026
Same action patternSame impact area

Vienna Airport Targeted in APT73/Bashe Ransomware Attack

The ransomware group APT73/Bashe claimed responsibility for a cyberattack against Vienna Airport (Flughafen Wien AG) on June 23, 2026, threatening to leak sensitive data. The airport acknowledged a limited leakage of old cargo-related files from one email inbox but denied a broader system compromise.

ayabank.com logoAyabankJun 23, 2026
Same action patternSame impact area

AYA BANK Hit by Lapsus$ Ransomware Attack

AYA BANK, a prominent financial institution in Myanmar, fell victim to a ransomware attack by the Lapsus$ group, discovered on June 23, 2026. Lapsus$ claimed to have stolen over 120 gigabytes of data, including a full dump and PII, and threatened to sell it if a ransom was not paid. AYA Bank acknowledged a breach of an older application portal exposing some customer information but stated its core financial networks remained secure.

mckaysugar.com.au logoMckaysugarJun 21, 2026
Same action patternSame impact area

McKay Sugar Cyber Incident by Gentlemen Ransomware Group

McKay Sugar, a major Australian sugar producer, suffered a cyber incident that disrupted operations at its Farley and Racecourse Mills. The Gentlemen ransomware group claimed responsibility for the attack around June 15-16, 2026, on their leak site. Public reporting indicated that McKay Sugar was working to verify what data was stolen or accessed. The ransomware group claimed to have stolen over 26 million records containing PII of customers and other internal data. The incident was discussed in public reporting around June 21, 2026.