1
00:00:00,000 --> 00:00:07,000
So as we know from the previous lectures, Thales is alive and an amnesic operating system.

2
00:00:08,000 --> 00:00:14,000
What we mean by this is it leaves no traces on the computer that it gets used on.

3
00:00:14,000 --> 00:00:18,000
And it does this by never using the internal storage.

4
00:00:18,000 --> 00:00:22,000
It runs completely from the RAM, which is securely wiped.

5
00:00:22,000 --> 00:00:30,000
Once you turn off or restart the computer, then when that computer boots it will boot into its default

6
00:00:30,000 --> 00:00:31,000
operating system.

7
00:00:31,000 --> 00:00:38,000
The system will work exactly the same way that it was working before, and even if the whole computer

8
00:00:38,000 --> 00:00:45,000
gets inspected, there will be no traces of what you've done, and there will even be no traces of tails

9
00:00:45,000 --> 00:00:47,000
being used on that computer.

10
00:00:49,000 --> 00:00:53,000
Now this is a great feature that serves the main purpose of Thales.

11
00:00:53,000 --> 00:01:01,000
So it improves security because even if someone manages to hack into that computer and install malware

12
00:01:01,000 --> 00:01:07,000
or change the settings to compromise your privacy and anonymity, once you restart and boot into details,

13
00:01:07,000 --> 00:01:12,000
everything will be removed because nothing can be stored on that system.

14
00:01:12,000 --> 00:01:18,000
Not only that, but if you are dealing with sensitive files, you can do so without worrying about someone

15
00:01:18,000 --> 00:01:24,000
being able to recover these files because they will never be stored on the system.

16
00:01:24,000 --> 00:01:30,000
So these are great features that serve the main purpose of Thales, which is an operating system that

17
00:01:30,000 --> 00:01:34,000
is designed to improve our anonymity and privacy.

18
00:01:35,000 --> 00:01:41,000
But this feature is also a little bit inconvenient because, like we said, we cannot store anything

19
00:01:41,000 --> 00:01:43,000
on the system.

20
00:01:43,000 --> 00:01:49,000
So not only that we can store files and passwords or keys, which is something that we might want to

21
00:01:49,000 --> 00:01:50,000
do.

22
00:01:50,000 --> 00:01:55,000
We also can save any changes we make to any of the programs.

23
00:01:55,000 --> 00:02:00,000
For example, if you configure the mail client or if you change it to our settings, or even if you

24
00:02:00,000 --> 00:02:07,000
connect to a wi fi network, all of these settings will be removed and forgotten once you restart or

25
00:02:07,000 --> 00:02:09,000
boot into Thales again.

26
00:02:09,000 --> 00:02:14,000
So every time you boot entails, you'll have to go and connect to the network that you always connect

27
00:02:14,000 --> 00:02:14,000
to.

28
00:02:15,000 --> 00:02:17,000
You'll have to go and change the Tor browser settings.

29
00:02:17,000 --> 00:02:23,000
If you change them, if you set up a mail client, you'll have to go and set it up again, which can

30
00:02:23,000 --> 00:02:26,000
be a bit troublesome and take a bit of time.

31
00:02:27,000 --> 00:02:32,000
Now, the solution to this is to enable persistence on tells.

32
00:02:33,000 --> 00:02:39,000
Persistence allows us to store files, passwords, keys or program settings that we modify.

33
00:02:40,000 --> 00:02:48,000
It does this by encrypting whatever that's left on the USB flash drive so it still doesn't use the internal

34
00:02:48,000 --> 00:02:49,000
storage.

35
00:02:49,000 --> 00:02:55,000
The internal storage will still remain untouched and it will only rely on the space remaining on that

36
00:02:55,000 --> 00:02:57,000
USB stick.

37
00:02:57,000 --> 00:03:00,000
It will encrypt that space to improve its security.

38
00:03:00,000 --> 00:03:04,000
And then when you log in, you will have two options.

39
00:03:04,000 --> 00:03:12,000
You can log in with the live default option where nothing is stored, or you can unlock the persistent

40
00:03:12,000 --> 00:03:20,000
storage where you'll be able to store files in a specific directory, install programs, edit settings

41
00:03:20,000 --> 00:03:24,000
and everything will be stored like any other operating system.

42
00:03:25,000 --> 00:03:29,000
So with this, you'll be able to store files, passwords, keys.

43
00:03:29,000 --> 00:03:32,000
Like I said, you'll be able to modify settings.

44
00:03:32,000 --> 00:03:38,000
So if you connect to a network or if you log into a mail client, all of these settings will be stored.

45
00:03:38,000 --> 00:03:42,000
So when you log in again, you won't have to do them again.

46
00:03:42,000 --> 00:03:46,000
You'll also be able to install programs or browser plug ins and so on.

47
00:03:48,000 --> 00:03:53,000
Now, the last two benefits are in red for a reason, because you need to be careful when you're doing

48
00:03:53,000 --> 00:04:00,000
these things, because you need to keep in mind that those was made with security in mind.

49
00:04:00,000 --> 00:04:07,000
So all of the programs that come preinstalled in it are configured in a way to protect your anonymity

50
00:04:07,000 --> 00:04:08,000
and privacy.

51
00:04:08,000 --> 00:04:15,000
Therefore, when you modify these settings, or if you install more programs, these new programs or

52
00:04:15,000 --> 00:04:20,000
these modified settings might compromise your anonymity and privacy.

53
00:04:20,000 --> 00:04:25,000
So only install programs or modify settings if you know what you're doing.

54
00:04:26,000 --> 00:04:34,000
Not only that, but Tor and Thales work best when it is hard to distinguish between people that are

55
00:04:34,000 --> 00:04:35,000
using these systems.

56
00:04:35,000 --> 00:04:41,000
Therefore, when you modify settings or install extra programs, you're becoming more unique.

57
00:04:41,000 --> 00:04:48,000
Therefore, it would be easier to detect you because you're more distinguishable than other users than

58
00:04:48,000 --> 00:04:52,000
the people that are using Tor and Thales with the default settings.

59
00:04:54,000 --> 00:05:00,000
So with keeping all of this in mind, in the next lecture, I'm going to show you how to enable persistence

60
00:05:00,000 --> 00:05:01,000
on tails.