A technician has identified malicious traffic originating from a user's computer. Which of the following is the best way to identify the source of the attack?

Firewall logs provide detailed records of network traffic, including source and destination IP addresses, ports, protocols, and timestamps for both allowed and blocked connections. By analyzing these logs, a technician can trace the malicious outbound traffic to its ultimate external destination or identify unusual internal connection attempts, thus helping to pinpoint the source or target of the attack originating from the user's computer.

Isolating the machine is an important containment step to prevent further harm, but it does not help identify the source of the attack itself.

Inspecting the Windows Event Viewer can help identify internal system events, malware activity, or compromise indicators on the local machine, but it typically does not directly reveal the external source or destination of malicious network traffic.

Taking a physical inventory of the device is part of asset management and does not contribute to identifying the source of a network-based attack.