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Ransomware

Everest claims data theft from South Korean network security firm

First reported · Last reported · 2 related reports

The Everest ransomware group claimed to have stolen 263 GB of data from a South Korean network security company. The claim became public on 17 October 2026, prompting concerns about the exposure of material relating to 75 institutions and companies.

Key facts

Affected organisation
Being confirmed
Incident type
Ransomware
Occurred / detected
Not confirmed
Scale of damage
Claimed theft of 263 GB of data; concerns over exposure of material relating to 75 institutions and companies
Cause / method
Not confirmed
Location
South Korea

Timeline

  1. The Everest ransomware group's claim that it had stolen 263 GB of data from a South Korean network security company became public.

2 related reports

The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.