Add-ons

Mozila Firefox is a great browser in terms of security and privacy because of following add-ons:

Adblock Plus: It blocks all advertisements, even the ones in Youtube when you are watching videos, therefore it is great and it is the must have!
https://addons.mozilla.org/en-US/firefox/addon/adblock-plus/?src=cb-dl-mostpopular

After installing, you will need to add subscriptions, in order to get it working! This add on improves your privacy and security on the web! 

NoScript: (Great Security)
This add on is perfect, when you visit unknown websites, some scripts are very dangerous and they can cause problems.
https://addons.mozilla.org/en-US/firefox/addon/noscript/?src=cb-dl-mostpopular

WOT - Safe Surfing: (Very Good Site Adviser)
https://addons.mozilla.org/en-US/firefox/addon/wot-safe-browsing-tool/?src=cb-dl-mostpopular

BetterPrivacy: (Deletes flash cookies and disables ping tracking)
https://addons.mozilla.org/en-US/firefox/addon/betterprivacy/?src=cb-dl-mostpopular

Ghostery: (Blocks loads of stuffs such as cookies, trackers, social media etc.)
https://addons.mozilla.org/en-US/firefox/addon/ghostery/?src=cb-dl-mostpopular

Do Not Track Plus: Block trackers
https://addons.mozilla.org/en-US/firefox/addon/donottrackplus/?src=cb-dl-users

RequestPolicy: (Recommended - If you know how to use it then it is perfect!)
https://addons.mozilla.org/en-US/firefox/addon/requestpolicy/?src=cb-dl-users

Search Engine Security: (Protection against fake software, like fake anti-viruses)
https://addons.mozilla.org/en-US/firefox/addon/search-engine-security/?src=ss

FB Phishing Protector: (Phishing protection for Facebook or just use Trusteer Rapport much better choice!)
https://addons.mozilla.org/en-US/firefox/addon/facebook-phishing-protector/?src=cb-dl-users

Flashblock: (Very Good one to have for stopping flash videos from playing automatically)
https://addons.mozilla.org/en-US/firefox/addon/flashblock/?src=ss

AdvertBan: (Similar to Ad-block Plus without subscriptions but I prefer Ad-block Plus)
https://addons.mozilla.org/en-US/firefox/addon/adban/?src=cb-dl-users

PrivacySuite: (Block tracking cookies , etc.)
https://addons.mozilla.org/en-US/firefox/addon/privacysuite/?src=cb-dl-users

Google Privacy:
https://addons.mozilla.org/en-US/firefox/addon/google-privacy/?src=cb-dl-users

Karma Blocker: (You might need to disable this while checking your emails on Yahoo based on my experience, so if you use Yahoo mail then I would say don't use this one)
https://addons.mozilla.org/en-US/firefox/addon/karma-blocker/?src=cb-dl-users

CsFire: (Very good defence against spyware etc.)
https://addons.mozilla.org/en-US/firefox/addon/csfire/?src=cb-dl-users

HTTPS everywhere for both FireFox and Chrome browsers:
https://www.eff.org/https-everywhere

These are my favourite add-ons, that can make your browser totally safe and secure and remember that you will need to install FireFox first.
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