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31.13.9.35 has a threat confidence score of 69%. This IP address from Sweden (AS197784, Gibon Ljungby AB) has been observed in 5 honeypot sessions targeting RDP protocols. First observed on April 21, 2026, most recently active May 5, 2026.
Identifies RDP clients attempting authentication using the legacy RDP security mode where credentials are exchanged through the older RDP security layer instead of Network Level Authentication (NLA). This indicates the client negotiated legacy plaintext authentication during the RDP security handshake
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