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43.138.25.121 has a threat confidence score of 95%. This IP address from China (AS45090, Shenzhen Tencent Computer Systems Company Limited) has been observed in 174 honeypot sessions targeting RDP protocols. First observed on March 30, 2026, most recently active April 1, 2026.
Identifies RDP clients attempting authentication using Network Level Authentication (NLA) with the NTLM challenge-response protocol. This occurs during the CredSSP negotiation phase before a remote desktop session is established and indicates an active credential authentication attempt against the RDP service