ESET APT Activity Report Q4 2025–Q1 2026
ESET Research
Threat Reports
An overview of the activities of selected APT groups investigated and analyzed by ESET Research in Q4 2025 and Q1 2026
28 May 2026 • 4 min. read
ESET APT Activity Report Q4 2025–Q1 2026 summarizes notable activities of selected advanced persistent threat (APT) groups documented by ESET researchers from October 2025 through March 2026. The operations highlighted here are representative of the broader threat landscape we investigated during this period, illustrating key trends and developments, and contain only a fraction of the cybersecurity intelligence data provided to customers of ESET Threat Intelligence APT Reports.
During the monitored time frame, China-aligned threat actors remained highly active worldwide, conducting espionage campaigns shaped in part by geopolitical developments affecting Beijing’s economic and security interests. Following the US military operation in Venezuela and amid continuing instability in the Gulf region, we spotted signs that China-aligned groups were being mobilized...
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