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Medium

Monterey Mushrooms hit by INC ransomware, employee data exposed

Monterey Mushrooms, LLC, a major U.S.

Key points

  • 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
  • Monterey Mushrooms hit by INC ransomware, employee data exposed

Connected intelligence

Signal brief

Follow the organization, likely method and potential impact to explore connected Shadow Tier intelligence.

02

Likely method

Ransomware

Malware activity

03

Potential impact

Data Exposure

Confidentiality, Availability

Published
Sep 5, 2025
Updated
Aug 5, 2026
Confidence
Medium
Evidence
2 sources

Structured assessment

Signal analysis

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

Threat source

Malware activity

Watch ransomware, endpoint compromise and business interruption exposure.

  • Source type: possible insider or internal misuse

Business impact

Potential operational disruption
Impact area
Confidentiality, Availability
Likely asset
User or customer data

Mentioned entities

MontereymushroomsData DisclosureMonterey MushroomsINCLLCU.SThe INCAn Monterey Mushrooms

Quick context

Questions about this signal

What happened in this signal?

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.

When was this signal reported?

Shadow Tier lists Sep 5, 2025 as the signal date.

Which organization is connected to this signal?

Montereymushrooms is the organization connected to this public signal.

Explore Montereymushrooms
Which attack pattern is relevant?

This signal is connected to current ransomware incidents based on its reported incident context.

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Which impact area is relevant?

This signal is connected to data exposure and breach intelligence based on its reported consequences.

Explore data exposure and breach intelligence