added bullet point about pua feature

windows/security/threat-protection/windows-defender-smartscreen/windows-defender-smartscreen-overview.md

@@ -21,26 +21,26 @@ ms.author: mjcaparas
 - Windows 10
 - Windows 10 Mobile
 
-Windows Defender SmartScreen helps to protect your employees if they try to visit sites previously reported as phishing or malware websites, or if an employee tries to download potentially malicious files.
+Windows Defender SmartScreen protects against phishing or malware websites, and the downloading of potentially malicious files.
 
 **SmartScreen determines whether a site is potentially malicious by:**
 
-- Analyzing visited webpages looking for indications of suspicious behavior. If it finds suspicious pages, SmartScreen shows a warning page, advising caution.
+- Analyzing visited webpages, looking for indications of suspicious behavior. If SmartScreen determines that a page is suspicious, it will show a warning page to advise caution.
 
-- Checking the visited sites against a dynamic list of reported phishing sites and malicious software sites. If it finds a match, SmartScreen shows a warning to let the user know that the site might be malicious.
+- Checking visited sites against a dynamic list of reported phishing and malicious software sites. If SmartScreen finds a match, it will show a warning indicating that the site might be malicious.
 
 **SmartScreen determines whether a downloaded app or app installer is potentially malicious by:**
 
-- Checking downloaded files against a list of reported malicious software sites and programs known to be unsafe. If it finds a match, SmartScreen shows a warning to let the user know that the site might be malicious.
+- Checking downloaded files against a list of reported malicious software sites and programs known to be unsafe. If SmartScreen finds a match, it will show a warning indicating that the site might be malicious.
 
-- Checking downloaded files against a list of files that are well known and downloaded by many Windows users. If the file isn't on that list, SmartScreen shows a warning, advising caution.
+- Checking downloaded files against a list of files that are well-known and downloaded by many Windows users. If the file isn't on that list, SmartScreen shows a warning, advising caution.
 
-    >[!NOTE]
+    > [!NOTE]
-    >Before Windows 10, version 1703 this feature was called the SmartScreen Filter when used within the browser and Windows SmartScreen when used outside of the browser.
+    > Before Windows 10, version 1703, this feature was called _the SmartScreen Filter_ when used within the browser and _Windows SmartScreen_ when used outside of the browser.
 
 ## Benefits of Windows Defender SmartScreen
 
-Windows Defender SmartScreen helps to provide an early warning system against websites that might engage in phishing attacks or attempt to distribute malware through a socially-engineered attack. The primary benefits are:
+Windows Defender SmartScreen provides an early warning system against websites that might engage in phishing attacks or attempt to distribute malware through a socially-engineered attack. The primary benefits are:
 
 - **Anti-phishing and anti-malware support.** SmartScreen helps to protect your employees from sites that are reported to host phishing attacks or attempt to distribute malicious software. It can also help protect against deceptive advertisements, scam sites, and drive-by attacks. Drive-by attacks are web-based attacks that tend to start on a trusted site, targeting security vulnerabilities in commonly-used software. Because drive-by attacks can happen even if the user does not click or download anything on the page, the danger often goes unnoticed. For more info about drive-by attacks, see [Evolving Microsoft SmartScreen to protect you from drive-by attacks](https://blogs.windows.com/msedgedev/2015/12/16/SmartScreen-drive-by-improvements/#3B7Bb8bzeAPq8hXE.97)