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191.252.156.135 has a threat confidence score of 56%. This IP address from Brazil (AS27715, Locaweb Servicos de Internet SA) has been observed in 5 honeypot sessions targeting RDP protocols. First observed on April 10, 2026, most recently active April 26, 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