There is a long discussion (covering two years) as to the pros and cons of including uBlock Origin as a pre-bundled part of the TBB (https://trac.torproject.org/projects/tor/ticket/17569), but no conclusion was reached. In my experience with normal Firefox, adding uBlock Origin gives a huge improvement in browser performance when going to heavy websites (think CNN.com for example). This is more critical with TB due to the slowness of the Tor network. So I would like to add uBlock Origin to my installation, but of course I am concerned that there will be privacy implications.


Adding addons is not advised for several reasons. Why not using what already exist in the TBB: NoScript and Security Settings. You can block many scripts from running with those tools.

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This apparently comes down to browser fingerprinting. How it's possible to track one uniquely via browser extensions, I don't know the details.

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