

If it finds any match then, Microsoft Defender SmartScreen will immediately show a warning message. Also, it will check that the Visited sites are against a dynamic list of reported phishing sites and malicious software sites. If the site contains any suspicious behavior then it will show a warning message. Then here is the answer for this, first Defender SmartScreen analyzes Visited web pages looking for indications of suspicious behavior. If you are wondering how Microsoft Defender SmartScreen determines whether a site is potentially malicious. Also, SmartScreen protects against phishing or malware websites and applications and avoids the downloading of potentially malicious files.

SmartScreen filter is a built-in tool that automatically scans applications, files, downloads, and websites, and blocking the Known dangerous content, and warns you before you run unknown applications.
