


Microsoft defines PUAs as other types of threats that might affect Windows performance or use or that have a poor reputation. Potentially Unwanted Apps (PUA) are not viruses or malware. If a webpage is deemed suspect or it is on Microsoft’s list, SmartScreen displays a warning that the page may not be safe. Secondly, sites and apps are checked against a constantly updated list of reported malicious sites. First, it analyzes webpages for suspicious behavior. SmartScreen has two mechanisms for protecting users. Windows Defender SmartScreen uses reputation-based protection to defend users against phishing and malware websites and applications, and potentially malicious files. Windows 10 protects users from malicious downloads using a feature called SmartScreen.
