Perhaps you have come across some bad sites that has images embedded codes hence news of these are becoming the norm of legacy hacking and digital world has brought you attention to this and offers only hardship for those who has fallen victim for these heinous act to rob people of their devices just because nothing is secure on the site or the bad actors are now aware these vulnerabilities can be exploited to harm or overtake your device with,

It's good that there are always improvements and that we demand we need healthier internet and fight these circumstances and ask those who has these site to keep up with the healthier internet surfing by asking developers and any site owner to implement to stop using mixed contents, and it's good that Firefox offers this option to block mixed contents to fight it hence no need to use third-party extensions for these.

To Activate Mixed Content Block go to your address bar and type in ' about:config ' and type in search bar ' mix '.

Find Security.Mixed_Content.Block_Display_Content and change it to ' True '.

security.mixed_content.block_display_content

Find Security.Mixed_Content.Block_Object_Subrequest and change it to ' True '.

security.mixed_content.block_object_subrequest