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185.218.138.3 has a very high threat confidence level of 97%, originating from Ashburn, United States. It has been observed across 1,055 sessions targeting RDP, First observed on March 10, 2026, most recently active March 12, 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