 Browser security settings, HTTP versus HTTPS. Canvas content is secure. All Canvas pages are hosted on a secure server. Canvas page addresses, or URLs, begin with HTTPS. The S is for secure. Built-in protection. Web browsers, like Firefox and Chrome, have secure browser settings to help protect you. These settings block unsecure or embedded content in Canvas, like YouTube videos or Quizlet flashcards. The result of this blocking is a blank page or a blank section of a page in Canvas where nothing displays. Look for the shield icons. The browser security settings can be bypassed so you can unblock and see the content. If you see a blank or empty page, look for the small shield icons in the URL address bar. The shield means that your browser is protecting you by blocking something. Let's look at Firefox. The shield icon is on the left side in Firefox. It means that content is being blocked. When content is blocked, you cannot see it. To unblock content in Firefox, click on the shield icon, click on the drop-down menu arrow, click on Disable Protection on this page. Now let's look at Chrome. The shield icon is on the right side in Chrome. It means that content is being blocked. When content is blocked, you cannot see it. To unblock content in Chrome, click on the shield icon, click on the Load Unsafe Script button. The end.