Among the options provided, the log source that would most likely confirm the malware infection on the company-owned and managed laptop is:
A. XDR logs
XDR (Extended Detection and Response) logs aggregate and correlate data from various security sources, such as endpoint detection and response (EDR), network traffic analysis (NTA), and other security tools. These logs provide comprehensive visibility into security events and incidents across the organization's infrastructure.
If the laptop is suspected to have malware, the EDR component of the XDR solution would likely generate logs indicating suspicious or malicious behavior on the endpoint. This could include activities such as file modifications, process executions, network connections to known malicious domains, or other indicators of compromise (IOCs) associated with malware infections.