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43.133.59.138 has a threat confidence score of 94%. This IP address from Singapore (AS132203, Tencent Building, Kejizhongyi Avenue) has been observed in 211 honeypot sessions targeting RDP protocols. First observed on March 13, 2026, most recently active March 18, 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