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Medium

Tennessee Valley Electric Cooperative hit by Qilin ransomware

The Qilin ransomware group claimed responsibility for breaching Tennessee Valley Electric Cooperative (TVEC), a U.S.

Key points

  • The Qilin ransomware group claimed responsibility for breaching Tennessee Valley Electric Cooperative (TVEC), a U.S. electric cooperative. Qilin posted claims on its dark web site, but did not specify the volume or type of data involved, nor did it p
  • Tennessee Valley Electric Cooperative hit by Qilin ransomware

Connected intelligence

Signal brief

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02

Likely method

Ransomware

Malware activity

03

Potential impact

Data Exposure

Confidentiality, Availability

Published
Mar 11, 2026
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

TvecData DisclosureTennessee Valley Electric CooperativeQilinThe QilinTVECU.SBased

Quick context

Questions about this signal

What happened in this signal?

The Qilin ransomware group claimed responsibility for breaching Tennessee Valley Electric Cooperative (TVEC), a U.S. electric cooperative. Qilin posted claims on its dark web site, but did not specify the volume or type of data involved, nor did it post any samples. TVEC has not publicly addressed the ransomware gang's claims. Based on Qilin's previous attacks, the stolen data could include employee information, customer records, or internal organizational documents.

When was this signal reported?

Shadow Tier lists Mar 11, 2026 as the signal date.

Which organization is connected to this signal?

Tvec is the organization connected to this public signal.

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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.

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