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<h1 id="security-level">Security levelconfinement">Security confinement</h1>
type: Plain text
<h1 id="confinement">Security confinement</h1>
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[[!meta title="Browsing the web with Tor Browser"]]
[[!meta title="Navegar por la web con el Navegador Tor"]]
[[!toc levels=1]]
[[!toc levels=1]]
*[Tor Browser](https://www.torproject.org)* is a web
browser based on [Mozilla Firefox](https://www.firefox.com/) but configured
to protect your privacy.
El <span class="application">[Navegador Tor](https://www.torproject.org/es/)</span> es un
navegador web basado en [Mozilla Firefox](https://www.firefox.com/es-ES/), configurado para
proteger tu privacidad.
[[!img lib/apps/tor-browser.png link="no" alt=""]]
[[!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:
Enviar tus conexiones a sitios web a través de la red Tor no es suficiente para protegerte totalmente mientras navegas la web:
Cookies can be used to track and identify you across different websites.
Se pueden usar cookies para seguirte e identificarte a través de distintos sitios web.
Security vulnerabilities in JavaScript have been used to [deanonymize Tor Browser in the past](https://arstechnica.com/information-technology/2013/08/attackers-wield-firefox-exploit-to-uncloak-anonymous-tor-users/).
Se han utilizado vulnerabilidades de seguridad en Javascript para [desanonimizar el Navegador Tor anteriormente](https://arstechnica.com/information-technology/2013/08/attackers-wield-firefox-exploit-to-uncloak-anonymous-tor-users/).
This is why *Tor Browser* integrates all kinds of security protections inside the browser as well.
Es por eso que el *Navegador Tor* integra todo tipo de protecciones de seguridad dentro del navegador.
Some frequently asked questions about *Tor Browser* can be found in [[the FAQ|support/faq#browser]].
Puedes encontrar algunas preguntas frecuentes sobre el <span class="application">Navegador Tor</span>en [[el 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]]
 
<h1 id="confinement">Security confinement</h1>
<h1 id="security-level">Nivel de seguridad</h1>
*Tor Browser* is only allowed to save the downloads and read the files that you
specify in the file chooser of GNOME.
 
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.
 
<div class="tip">
<div class="tip">
<p>To prevent Tails from running out of memory and crashing, download
very big files to the <i>Persistent</i> folder.
The files that you download outside of the Persistent Storage are
stored in memory (RAM), which is more limited.</p>
<p>Para evitar que Tails se quede sin memoria y se bloquee, descarga
los archivos grandes en la carpeta <em>Persistent/Tor Browser</em>.
Todos los archivos que descargues fuera del Almacenamiento Persistente
se descargan en la memoria (RAM), que está más limitada.</p>
</div>
</div>
<div class="note">
<div class="note">
<p>In [[Tails 6.14.1|news/version_6.14.1]] (April 2025), we improved the
previous confinement and you can now safely download to and read from any
folder in your <i>Home</i> folder or Persistent Storage.</p>
 
This confinement relies on 2 security technologies: *[[!debwiki AppArmor]]* and the [XDG Desktop Portals](https://flatpak.github.io/xdg-desktop-portal/) of *Flatpak*.
 
<div class="bug">
<div class="bug">
<p>When opening files from the <i>/usr</i> or <i>/etc</i> folders in Tor
Browser, Tor Browser displays the following error:</p>
 
<pre>Access to the file was denied</pre>
 
<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*.
 
The anonymity provided by *Tor Browser* works by making all users look the same to make it impossible to know who is who among the millions of users of *Tor Browser*.
 
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<h1 id="confinement">Confinamiento de seguridad</h1>

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<h1 id="security-level">Nivelconfinement">Confinamiento de seguridad</h1>
09/08/2025

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<h1 id="confinement">Security confinement</h1>
<h1 id="security-level">Nivelconfinement">Confinamiento de seguridad</h1>
09/08/2025
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<h1 id="confinement">Security confinement</h1>
<h1 id="security-level">Nivel de seguridad</h1>
04/03/2025
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<h1 id="security-level">Security levelconfinement">Security confinement</h1>
04/03/2025
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String information

Source string description
type: Plain text
Flags
no-wrap
Unit identifier
720119
String age
04/03/2025
Last updated
04/03/2025
Source string age
04/03/2025
Translation file gettext PO file
wiki/src/doc/anonymous_internet/Tor_Browser.es.po, string 16