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121.28.170.66 has a very high threat confidence level of 81%, originating from China, on the CHINA UNICOM China169 Backbone network (4837). It has been observed across 104 sessions targeting SSH, TELNET, First observed on January 21, 2026, most recently active March 5, 2026.
Identifies SSH session activity where the attacker executes uname -s -m to retrieve the operating system name and machine architecture for host fingerprinting and payload targeting.