A spoofing issue exists in the NETLOGON service, allowing remote attackers to spoof the computer name of a secure channel's endpoint and obtain sensitive session information by running a crafted application and leveraging the ability to sniff network traffic. This issue arises when the Netlogon service improperly establishes a secure communications channel belonging to a different machine with a spoofed computer name. To exploit this, an attacker must first be logged on to a domain-joined system and be able to observe network traffic, then run a specially crafted application to establish a secure channel connection belonging to a different computer, potentially using the established secure channel to obtain session-related information for the actual secure channel of the spoofed computer.