So, Microsoft Defender SmartScreen is a security layer that needs to be implemented in my opinion to protect your users against the dark part of the internet. If an app or website has no reputation or is known to be malicious, Microsoft Defender SmartScreen will warn the user or block the app from running entirely. Microsoft Defender SmartScreen will check the digital signatures and some other factors against a Microsoft-maintained service. Microsoft Defender SmartScreen checks the reputation of any website, application, or web-based app the first time it’s run. Blocking URLs associated with potentially unwanted applications.Microsoft Defender SmartScreen is constantly learning.

Fully integrated into Windows 10 and 11.Reputation-based URL and app protection.When Microsoft Defender SmartScreen is configured, you will have the following benefits: Microsoft Defender SmartScreen provides a warning page against e.g., websites that might engage in phishing attacks or attempt to distribute malware through a socially engineered attack.

Microsoft Defender is a Windows built-in security solution that helps your user to be protected against phishing or malware websites and malicious applications and protects your user to download (potentially) malicious files.

Microsoft smartscreen