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Operation KillSwitch: Police Dismantle KillSec Ransomware Group

ID: f6b53f4d-59dd-5e11-ba54-d745c7742cc7

STIX ID: report--f6b53f4d-59dd-5e11-ba54-d745c7742cc7

Feed Name: Security Affairs

Threat Score
75/100

Date Published: 2026-10-01

Date Updated: 2026-10-02

Author: Pierluigi Paganini

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Europol and partner agencies executed Operation KillSwitch to dismantle the KillSec ransomware group — seizing the group's Tor leak site, five central servers and domains, securing at least 110 TB of stolen data, and making three arrests after investigating roughly 1,000 suspected attacks (about 500 confirmed); investigators also found the group used AI to help build and target its ransomware infrastructure and continue probing seized devices and cryptocurrency trails to identify more victims and suspects.

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