When you open a link, Snapchat uses information from Google’s Safe Browsing service to check if the link is associated with spam, abuse, phishing, or other harmful activity. These sites may try to do things like steal your credentials or install malicious software on your device! If you open a link of this nature, you'll see an alert that lets you back out, or learn more about Google’s Safe Browsing service. The URL itself will not be shared with Google.