Update safe-links-about.md

Additonal information

Author: MithunRathinam

defender-office-365/safe-links-about.md

@@ -62,7 +62,7 @@ Safe Links protection by Safe Links policies is available in the following locat
   > - Safe Links ignores S/MIME signed messages.
   > - Safe Links no longer wraps URLs pointing to SharePoint or OneDrive sites, but the URLs are still processed by the Safe Links service. This change doesn't degrade protection. Instead, it improves the performance of loading SharePoint or OneDrive URLs.
   > - Using another service to wrap links before Defender for Office 365 might prevent Safe Links from process links, including wrapping, detonating, or otherwise validating the "maliciousness" of the link.
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 - **Microsoft Teams**: Safe Links protection for links in Teams conversations, group chats, or from channels.
 
   For more information about Safe Links protection in Teams, see the [Safe Links settings for Microsoft Teams](#safe-links-settings-for-microsoft-teams) section later in this article.
@@ -108,6 +108,8 @@ You can use a condition or exception only once, but the condition or exception c
 
 Safe Links scans incoming email for known malicious hyperlinks. Scanned URLs are rewritten or _wrapped_ using the Microsoft standard URL prefix: `https://<DataCenterLocation>.safelinks.protection.outlook.com` (for example, `https://nam01.safelinks.protection.outlook.com`). After the link is rewritten, it's analyzed for potentially malicious content.
 
+Safe Links rewrites URLs without altering their appearance in the standard email view. However, these rewritten URLs can be seen by viewing the email's source code. This process ensures secure links, protecting against potential threats while maintaining readability and integrity in the normal email view. When a user hovers over a URL, a pop-up message will display the original URL, indicating that it has been scanned by Safe Links. In plain text format emails, the Safe Links URLs will be directly visible within the content. 
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 After Safe Links rewrites a URL, the URL is rewritten even if the message is _manually_ forwarded or replied to. Wrapping is done per message recipient (both internal and external recipients). Additional links that are added to the forwarded or replied-to message are also rewritten.
 
 For _automatic_ forwarding by Inbox rules or SMTP forwarding, the URL isn't rewritten in the message that's intended for the final recipient _unless_ one of the following statements is true: