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187.33.155.173 has a threat confidence score of 93%. This IP address from Spain (AS49635, Cloudi Nextgen Sl) has been observed in 37 honeypot sessions targeting RDP protocols. First observed on April 6, 2026, most recently active April 7, 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