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Firefox automatically protects you from attacks by blocking potentially harmful insecure content on pages.

{for not m42} <!--unhide this template on November 3rd-->[[Template:updatedfeatureandroid]]--> When you see the shield icon in the address bar, it means that Firefox for Android has blocked content that is insecure on the page you're visiting. We'll explain what that means and what options you have. ;[[Image:mixed content on android]] [[Template:aboutmixedcontent]] = What options do I have? = '''Most websites will continue to work normally without any action on your part.''' If you need to allow the mixed content to be displayed, you can do that easily: # Tap the '''shield icon''' [[Image:Mixed Content Shield]] in the address bar and a menu will drop down. # Then tap {button Disable protection}. #;[[Image:Disable mixed content Android]] #* The icon in the address bar will change to a crossed out shield icon to remind you that insecure content is being displayed. ;[[Image:android insecure not 42]] To reverse the previous action (re-block mixed content), re-visit the page in a new tab. {/for} {for m42} Firefox automatically protects you from attacks by blocking potentially harmful insecure content on pages. Firefox will display a grey warning triangle or crossed-out lock to indicate that mixed content has loaded on the page. [[Template:aboutmixedcontent]] =How do I know if a page has mixed content?= If you see the green lock icon in the address bar, the page is secure. If the page had any insecure elements, Firefox already blocked them to keep the page secure. Tap the icon to view more security information, and see whether or not Firefox had blocked any insecure elements. ;[[Image:tap lock icon 42 android]] Firefox will display a grey warning triangle when insecure passive content is present and loaded on a page. If you see this icon, be aware that attackers may be able to manipulate parts of the page, for example, by displaying misleading or inappropriate content, but they shouldn’t be able to steal your personal data from the site. ;[[Image:warning triangle 42 android]] If you see a lock with a red line over it, Firefox is not blocking insecure elements, and that page is open to eavesdropping and attacks where attackers could steal your personal data from the site. Unless you’ve unblocked mixed content using the instructions in the next section, you shouldn’t see this icon. ;[[Image:mixed content off 42 android]] =Advanced users only: unblock mixed content= If you need to unblock mixed content, you can do that by changing your about:config settings. This setting will affect all the pages you visit: #Go to ''about:config''. #Change the ''security.mixed_content.block_active_content'' setting to '''false''' to unblock HTTP content. #You'll know when Firefox is not blocking potentially harmful insecure content when you see the lock icon with a red line across it: #;[[Image:mixed content off 42 android]] {warning}'''Warning:''' Unblocking mixed content can leave you vulnerable to attacks.{/warning} {/for}