Is this about the shield icon that Firefox shows on the location bar when mixed content is present and a secure https connection is used?

• https://support.mozilla.org/kb/how-does-content-isnt-secure-affect-my-safety
• https://developer.mozilla.org/Security/MixedContent

• https://addons.mozilla.org/firefox/addon/toggle-mixed-active-content/

My question was clear enough. It's about security sign in mozilla search bar. I don't understand the texts on these sites you provided me with.

hello, this will be shown for every site which doesn't load through a secure/encrypted connection (=websites starting with https://).

How do I tell if my connection to a website is secure?

Omg... Read my first post please... Is facebook site that loads through unencrypted connection? is youtube site that loads through unencrypted connection? I know the meaning of the sign FFS. All i want to know is why it appears when i start playing videos that are posted on facebook.

when you are on https://youtube.com and start playing a video, it will probably fetched through a non-secure http://-connection (because of the strain on the servers resources otherwise). even if one element of the page (the video in this particular case) isn't loaded through a secure connection this will be reflected in the site's security indicator & that's why you are getting the message.

I see, thanks

I too keep getting the ! for pretty much every youtube video and facebook website. It also warns me that I'm using flash?!! I have checked my clock, reinstalled Firefox, flash, booted in safe mode and nothing works. What the !"£$ is going on?!!