sg.info@xxxxxxxxxxxxxxxxxxx: > Hi guys and girls, > are there security issues using the privacy badger from eff.org with the tor browser ? > Or: Is there are a need to use privacy badger or is this utility dispensable ? The filters in use by Privacy Badger are fingerprintable - it is possible for sites to determine that you have it installed. In general, Tor Browser is opposed to adblockers, censorship lists, and related filters, since they are trivial for a dedicated adversary to bypass, and also distract from our mission of protecting from fingerprinting and tracking threats through altering the browser to provide real privacy by design. See also point 5 under: https://www.torproject.org/projects/torbrowser/design/#philosophy At the end of the day though, it is up to the user to decide if they want to incur the fingerprinting hit of installing such filters. This unfortunately has its own problems, since there are so many of these types of filtering addons (and even different blacklist subscription feeds for those addons) that they probably ultimately end up fragmenting the userbase quite a bit in total. Still, I also don't think that there's any reason to believe that even if we shipped Tor Browser with "the one true block everything adblocker" that userbase fragmentation wouldn't happen anyway. Many people would still install one or more additional filters for various reasons, if nothing else than because of personal preferences. Others may end up disabling filters (or subsets of them) because they break random stuff (if they could even figure that out). The only way to win the blacklist game is not to play it, I'm afraid. -- Mike Perry
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