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September 2025 Threat Trend Report on Ransomware

ID: ccfffaa8-de6c-5fbb-a3e7-a4fcc64a2996

STIX ID: report--ccfffaa8-de6c-5fbb-a3e7-a4fcc64a2996

Feed Name: ASEC

Threat Score
75/100

Date Published: 2025-10-16

Date Updated: 2026-04-26

Author: ATCP

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This AhnLab TIP report summarizes ransomware activity for September 2025, providing statistics on samples, affected systems and companies (derived from Dedicated Leak Sites), trends across industries and regions, and noting an overwhelming surge from the Qilin ransomware group that concentrated attacks against Korean asset management firms; the report also lists top ransomware groups and emerging threats.

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