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So as we know from the previous lectures Tales is alive and an amnesiac operating system.
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What we mean by this is it leaves no traces on the computer that it gets used on and it does this by
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never using the internal storage.
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It runs completely from the RAM which is securely wiped.
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Once you turn off or restart the computer then when that computer boots it will boot into its default
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operating system.
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This system will work exactly the same way that it was working before.
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And even if the whole computer gets inspected there will be no traces of what you've done.
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And there will even be no traces of tails being used on that computer.
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Now this is a great feature that serves the main purpose of tails.
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So it improves security because even if someone manages to hack into that computer and install malware
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or changed the settings to compromise your privacy and anonymity.
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Once you restart and boot in into tails everything will be removed because nothing can be stored on
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that system.
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Not only that but if you are dealing with sensitive files you can do so without worrying about someone
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being able to recover these files because they will never be stored on the system.
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So these are great features that serve the main purpose of tells which is an operating system that is
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designed to improve our anonymity and privacy.
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But this feature is also a little bit inconvenient because like we said we cannot store anything on
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the system.
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So not only that we can't store files and passwords or keys which is something that we might want to
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do.
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We also can't save any changes we make to any of the programs.
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For example if you configure the mail client or if you changed it or settings or even if you connect
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to a Wi-Fi network all of these settings will be removed and forgotten.
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Once you restart or boot into tales again.
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So every time you boot entails you'll have to go and connect to the network that you always connect
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to.
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You'll have to go and change the or browser settings if you change them if you set up a mail client.
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You'll have to go and set it up again which can be a bit troublesome and take a bit of time.
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Now the solution to this is to enable persistence on Intel's persistence allows us to store files passwords
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keys or program settings that we modify.
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It does this by encrypting whatever that's left on the USB flash drive.
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So it still doesn't use the internal storage the internal storage will still remain untouched and it
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will only rely on this piece remaining on that USB stick.
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It will encrypt that space to improve its security and then when you log in you will have two options.
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You can log in with the live default option where nothing is stored or you can unlock the persistent
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storage where you'll be able to store files in a specific directory install programs edit settings and
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everything will be stored like any other operating system so with this you'll be able to store files
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passwords keys.
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Like I said you'll be able to modify settings so if you connect to a network or if you log into a mail
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client all of these settings will be stored.
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So when you log in again you won't have to do them again.
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You'll also be able to install programs or a browser plugins and so on now the last two benefits are
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in red for a reason because you need to be careful when you're doing these things because you need to
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keep in mind that Toles was made with security in mind.
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So all of the programs that come pre installed in it are configured in a way to protect your anonymity
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and privacy.
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Therefore when you modify these settings or if you install more programs these new programs or these
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modified settings might compromise your anonymity and privacy.
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So only installed programs or modify settings if you know what you're doing.
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Not only that but tor entails work best when it is hard to distinguish between people that are using
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these systems.
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Therefore when you modify settings or install extra programs you're becoming more unique.
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Therefore it would be easier to detect you because you're more distinguishable than other users than
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the people that are using Tor and tails with the default settings.
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So with keeping all of this in mind in the next lecture I'm going to show you how to enable persistence
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on tells.
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