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157.173.121.196 has a threat confidence score of 87%. This IP address from France (AS51167, Contabo GmbH) has been observed in 23 honeypot sessions targeting RDP protocols. First observed on April 23, 2026, most recently active April 23, 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