Microsoft SmartScreen

SmartScreen (officially called Windows SmartScreen, Windows Defender SmartScreen and SmartScreen Filter in different places) is a cloud-based anti-phishing and anti-malware component included in several Microsoft products:

• All versions of the Microsoft Windows operating system since Windows 8
• Web browsers Internet Explorer and Microsoft Edge
• Xbox One and Xbox Series X and Series S video game consoles
• Online services Microsoft 365 (including Microsoft Outlook and Exchange) and Microsoft Bing.

SmartScreen as a business unit includes the intelligence platform, backend, serving frontend, UX, policy, expert graders, and closed-loop intelligence (machine learning and statistical techniques) designed to help protect Microsoft customers from safety threats like social engineering and drive-by downloads.