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77.90.185.135 has a threat confidence score of 84%. This IP address from Germany (AS215476, Inside Network LTD) has been observed in 3,111 honeypot sessions targeting RDP, SMTP, SIP, SSH, HTTP and 8 other protocols. First observed on January 20, 2026, most recently active April 6, 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