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Зачем UblockOrigin знать мой IP-адрес?

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Firefox меня предупредил, что Ublock Origin теперь требует новые права, а конкретно: информацию об имени компьютера и его IP-адрес. Зачем ему это? Теперь у меня в браузере персональный дианонимизатор?

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Ответ на: комментарий от Kron4ek

Для Ъ:

The change is nothing to do with uncovering your IP address - it is to stop a way to sneak around your rules.

An example of what used to work:

  • You have badguys.com blocked in your uBlock rules
    
  • example.com wants to use a tracker supplied by badguys.com, but you have *.badguys.com blocked
    
  • So, example.badguys.com is created (which would still be blocked) and also bg.example.com (which won't be blocked since you want to go to example.com and use that site)
    
  • bg.example.com is a cname (like an alias for a dns record) so now requests to bg.example.com go to example.badguys.com
    
  • You visit example.com and the badguys' server sneaks in, since the uBlock never saw badguys.com being mentioned
    

This new version of uBlock «uncloaks» the request to bg.example.com and discovers that it’s actually example.badguys.com. This is why it needs the dns permission, which is what that warning is about.

legolegs ★★★★★ ()