Firefox

Extensions != Plugins

• http://www.howtogeek.com/geeknote/the-more-you-know-browser-plugins-and-extensions-aren%E2%80%99t-the-same-thing/
• Firefox is killing support for browser plugins.
• Browser Extensions Are Like Tiny Web Pages That Live In Your Browser
• Browser Plugins Are Like Automatically Opening Every File You See. Browser plugins are actually applications compiled into a special format. Instead of being a .EXE file, they are usually a .DLL file and they are loaded only by the browser. But once they are loaded they are running much like any other application on your computer, except they are used to open a video (or other) file from the website you are visiting. So when there is a security hole bad things are going to happen.

Extensions

Noise control

It is mentioned in the pcworld.

Plugins

Uninstall or Disable Plugins to Make Your Browser More Secure

Popular Plug-ins You May Not Need: Silverlight, Java, and Flash.

Shockwave Flash

It is better to disable it.

Troubleshooting

Disable video autoplay

https://www.technologyhint.com/stop-video-autoplay-chrome-firefox/. The method works on html5 video on PCWorld.

For Flash

1. Press Ctrl + Shift + A or type about:addons.
2. Click on "Plugins" section and find Shockwave Flash plugin.
3. Click the drop-down menu besides the plugin and choose "Ask to Activate" option.

For HTML5

1. Type the following in the address bar: about:config
2. Search for this option: media.autoplay.enabled
3. Once you find the option, right-click on it and select "Toggle" option. This will change the value of the option to false.

Disassociate zip/tar.gz files with VLC

https://bugzilla.mozilla.org/show_bug.cgi?id=1108470

In the file /home/$USER/.local/share/applications/mimeapps.list,

I had this line:

application/octet-stream=vlc.desktop;

I erased "vlc.desktop" and it seems to resolve my problem.