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187.11.239.198 has a threat confidence score of 91%. This IP address from Brazil (AS27699, TELEFONICA BRASIL S.A) has been observed in 65 honeypot sessions targeting RDP protocols. First observed on March 12, 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