When you follow a link in Safari, you generally don't know where you're going to end up. That's fine most of the time, but what if you're concerned that a site might be trying to trick you into going somewhere malicious? Safari provides an easy way to look at the URL under a link. On the Mac, choose View > Show Status Bar, hover your pointer over the link, and look at the bottom of the window. In iOS, touch and hold a link (don't press for 3D Touch) until a popover appears, showing the link and giving you options for opening it. The most important thing to look at is the domain - us.norton.com in the screenshots. It should match where you think you're going, or at least look reasonable. If the URL is dubious, don't follow the link.