<h2 id="upgrade">Should I update Tails using <code>apt upgrade</code> or <i>Synaptic</i>?</h2>
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It is notimpossible to verify the integrity of a Tailsdevice, USB stick or DVD, whilen running Tails from this same device. Thisit. It would be like asking to someone whether she is a liar; the answer ofthey are lying: a true liar would always be "no"pretend to tell the truth.
It is impossible to verify the integrity of a TailsUSB stick or DVD while running Tails from it. It would be like asking to someone whether they are lying: a true liar would always pretend to tell the truth.
4. They can break your anonymity by making your browsing behaviour distinguishable amongst other Tails users.
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<!-- XXX: Push that information to the browser documentation? XXX: Check https://2019.www.torproject.org/docs/torbutton/torbutton-faq.html.en#recommendedextensions -->
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Fingerprinting websites, such as <https://panopticlicoveryourtracks.eff.org/>or <https://ip-check.info/>, try to retrieve as much information as possible from your browser to see if it can be used to identify you.
Fingerprinting websites, such as <https://coveryourtracks.eff.org/>, try to retrieve as much information as possible from your browser to see if it can be used to identify you.
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As explained in our documentation about [[the fingerprinting|doc/about/ of *Tor Browser* in Tails|doc/anonymous_internet/Tor_Browser#fingerprint]], Tails provides anonymity on the webby making it difficult to distinguish a particular user amongst all the users of <span class="application">Tor Browser</span> (either in Tails or on other operating systems).
As explained in our documentation about [[the fingerprint of *Tor Browser* in Tails|doc/anonymous_internet/Tor_Browser#fingerprint]], Tails provides anonymity by making it difficult to distinguish a particular user amongst all the users of <span class="application">Tor Browser</span> (either in Tails or on other operating systems).
With VPNs, the administrators of the VPN can knowUnlike Tor, VPNs don't provide strong anonymity because the VPN provider can see both where you are connecting from and where you are connecting to.