How does a Real-Time Scan function in anti-malware software?

The Real-Time Scan feature in anti-malware software continuously monitors files as they are accessed or modified, providing immediate protection against malware threats. When a user opens, saves, or modifies a file, the Real-Time Scan analyzes that file on-the-fly, ensuring that any potential threats are detected and mitigated instantly before they can affect the system. This proactive approach is crucial for maintaining system security, as it helps to prevent malware from being introduced into the system during regular user activities.

In contrast, other options suggest limited scanning capabilities. A one-time check for potential threats would not provide the ongoing protection required in today’s fast-paced computing environments. Scheduled scans, while useful, do not offer real-time protection because they rely on pre-set times rather than immediate detection. Similarly, performing scans only at system startup means that any threats introduced between starts goes unchecked until the next boot, leaving the system vulnerable. Hence, the continuous scanning aspect of Real-Time Scan is essential for comprehensive protection.