The rapid development cycle of Ubuntu would be too fast for Tails.
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Ubuntu adds features in ways that we find dangerous for privacy. For anexampleUbuntu One ([partly discontinued](http://blog.canonical.com/2014/04/02/shutting-down-ubuntu-one-file-services/))and the [, see [EFF: Privacy in Ubuntu 12.10,Amazon aAds and dData lLeaks](https://www.eff.org/deeplinks/2012/10/privacy-ubuntu-1210-amazon-ads-and-data-leaks).
Ubuntu adds features in ways that we find dangerous for privacy. For an example, see [EFF: Privacy in Ubuntu 12.10, Amazon Ads and Data Leaks](https://www.eff.org/deeplinks/2012/10/privacy-ubuntu-1210-amazon-ads-and-data-leaks).
<h2 id="unetbootin">Can I install Tails with UNetbootin, YUMI, Ventoy, or another tool?</h2>
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No.Tails provides upgrades every six4 weeks, thatwhich are thoroughly tested to make sure that no security feature or configuration gets broken. Updating add-ons in <span class="application">Tor Browser</span> might break the security built in Tails.
It is impossible to verify the integrity of a TailsUSB stick or DVD while running Tails from it. It would be like asking someone whether they are lying: a true liar would always pretend to tell the truth.
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<h2 id="javascript">Why is JavaScript enabled by default in <span class="application"i>Tor Browser</spani>?</h2>
Tor Browser also includes a [[security level|doc/anonymous_internet/Tor_browser#security-level]] and the [[NoScript|doc/anonymous_internet/Tor_browser#noscript]] extension to optionally disable more JavaScript. This might improve security in some cases. However, if you disable JavaScript, then the [[fingerprint|doc/anonymous_internet/Tor_Browser#fingerprint]] of your *Tor Browser* differs from most users. This reduces your anonymity.
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<h2 id="add-ons">Can I install other add-ons in <span class="application"i>Tor Browser</spani>?</h2>
4. They can break your anonymity by making your browsing behaviour distinguishable from other Tails users.
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Unless proven otherwise, no add-on, apart from the ones already included in Tails, haves been seriously audited and should be considered safe to use in this context.
Unless proven otherwise, no add-on, apart from the ones already included in Tails, has been seriously audited and should be considered safe to use in this context.
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<h2 id="update-add-ons">Should I manually update add-ons included in <span class="application"i>Tor Browser</spani>?</h2>