microsoft smarscreen

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SmartScreen (officially called Microsoft Defender SmartScreen, and formerly 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: 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 customers from safety threats like social engineering and drive-by downloads. SmartScreen was first introduced in Internet Explorer 7, then known as the Phishing Filter. Phishing Filter does not check every website visited by the user, only those that are known to be suspicious. With the release of Internet Explorer 8, the Phishing Filter was renamed to SmartScreen and extended to include protection from socially engineered malware. Every website and download is checked against a local list of popular legitimate websites; if the site is not listed, the entire address is sent to Microsoft for further checks. If it has been labeled as an impostor or harmful, Internet Explorer 8 will show a screen prompting that the site is reported harmful and shouldn't be visited. From there the user can either visit their homepage, visit the previous site, or continue to the unsafe page. If a user attempts to download a file from a location reported harmful, then the download is cancelled. The effectiveness of SmartScreen filtering has been reported to be superior to socially engineered malware protection in other browsers. According to Microsoft, the SmartScreen technology used by Internet Explorer 8 was successful against phishing or other malicious sites and in blocking of socially engineered malware.