URL defense is a service that will protect your network by blocking access to malicious URLs in email. These links are carefully evaluated to determine whether or not the link is safe. If the link is detected as dangerous, the URL will be rewritten and you will be redirected to a notification page stating the web page has been blocked. If the link is safe, you won’t see a difference. This protects your sensitive data and prevents malicious software, viruses, and more from entering your network.