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129.28.51.52 has a threat confidence score of 74%. This IP address from China (AS45090, Shenzhen Tencent Computer Systems Company Limited) has been observed in 10 honeypot sessions targeting RDP protocols. First observed on March 25, 2026, most recently active March 25, 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