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<span class="application">[Tor Browser](https://www.torproject.org)</span> is a web
browser based on [Mozilla Firefox](https://www.mozilla.org/firefox/) but configured
to protect your privacy.

[[!img lib/apps/tor-browser.png link=no alt=""]]

Sending your connections to websites through the Tor network is not enough to totally protect you while browsing the web:

Cookies can be used to track and identify you across different websites.

Some frequently asked questions about <span class="application">Tor Browser</span> can be found in
[[the FAQ|support/faq#browser]].

<h1 id="proxy">The proxy server is refusing connections</h1>

The following error message in *Tor Browser* means that Tails is not yet connected to the Tor network:

The proxy server is refusing connections

Make sure that you are:

[[Connected to a local network|anonymous_internet/networkmanager]]

[[Connected to the Tor network|anonymous_internet/tor]]

For example, thanks to this confinement, even if an attacker manages to exploit a security vulnerability in *Tor Browser*, they wouldn't be able to access all the content of your Persistent Storage.

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<h1 id="fingerprint">Hiding that you are using <i>Tor Browser</i></h1>

It is impossible to hide to the websites that you visit that you are using Tor, because the [list of exit nodes of the Tor network is public](https://metrics.torproject.org/exonerator.html).

That is why many more websites ask you to solve a CAPTCHA when using *Tor Browser*.