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"''This is actually potential a huge privacy issue as it is written that [https://github.com/StevenBlack/hosts/issues/1051 Firefox by default will route all your DNS traffic] to an external source beyond your control and without your accept and knowledge, and who is the external DNS hosting company and what will they do with all the data they collect''""''This is actually potential a huge privacy issue as it is written that [https://github.com/StevenBlack/hosts/issues/1051 Firefox by default will route all your DNS traffic] to an external source beyond your control and without your accept and knowledge, and who is the external DNS hosting company and what will they do with all the data they collect?''" Answer: At present it is Cloudflare and the purpose besides their claim of security is Data Mining: they want to know more about you!