Please remove this 'feature'. It's annoying and pointless. Why the hell is this message showing when we click a link WE ADDED FOR OURSELVES to a note?! It makes no sense at all. What's the thought process here? Imagine even if some hacker did get access to someone's account and added a malicious link, and the user clicks it... Will he suddenly decide not to follow the link because this useless message appears? Does anyone ever click 'back' on that screen? "Oh no, I'm leaving Evernote, I am freaking out! Thank god for that back button!" If you would track the behavior on that page, you will notice how much % of users click that 'back' button.
So please hire someone who has a clue about usability.
Also, please make a Linux client.