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121.37.173.242 has a threat confidence score of 95%. This IP address from China (AS55990, Huawei Cloud Service data center) has been observed in 102 honeypot sessions targeting RDP protocols. First observed on April 14, 2026, most recently active April 14, 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