CompTIA CySA+ CS0-003 Practice Question

The correct answer is Unexpected files in system directories. This indicates a potential compromise as adversaries may drop malicious files into system directories to establish persistence or execute attacks. Unauthorized users typically should not have access to these critical areas, and any unexpected files could be a sign of compromise. Other answers, such as large multimedia files or the presence of personal documents, while potentially concerning from a storage or policy standpoint, are not as directly indicative of malicious activity.