What is the function of the File Reputation Service?

The File Reputation Service is designed to enhance security by assessing the trustworthiness of files before they can execute on a system. By checking the reputation of files against a constantly updated cloud database, the service can determine whether a file is considered safe or potentially malicious based on historical data, user reports, and analysis from a wide range of sources. This proactive approach prevents potentially harmful files from being executed, thereby protecting the system from malware and other security threats.

In contrast, tracking user activities on websites does not fall under the functionality of the File Reputation Service; rather, that pertains to web usage monitoring solutions. Blocking known malware is a broader security function typically carried out by traditional antivirus or endpoint protection software, which may utilize information from the File Reputation Service as part of its tools. Finally, monitoring network traffic for suspicious activity is related to network security measures that focus on analyzing incoming and outgoing data rather than evaluating the reputation of specific files. Thus, the correct choice highlights the specific role of the File Reputation Service in verifying file safety via a cloud-based assessment.