1
00:00:00,000 --> 00:00:00,000
Okay.

2
00:00:00,000 --> 00:00:04,000
So we're going to pick up from where we left in the previous lecture.

3
00:00:04,000 --> 00:00:10,000
And in this lecture, I'm going to continue showing you the basics of Thales, how to see the notifications,

4
00:00:10,000 --> 00:00:14,000
how to edit some of the settings, connect to networks and so on.

5
00:00:15,000 --> 00:00:20,000
And going back to the status bar, we have the time and the date in here.

6
00:00:21,000 --> 00:00:27,000
Now, if you also click on this, you'll get a nice calendar on the right and you'll also get the notification

7
00:00:27,000 --> 00:00:32,000
menu in here in which you'll see a list of system notifications.

8
00:00:33,000 --> 00:00:35,000
Continuing to the right.

9
00:00:35,000 --> 00:00:42,000
We have the onion icon right here, which shows us the status of the Tor circuit.

10
00:00:42,000 --> 00:00:46,000
Now, if you're not connected right now, you should see an X beside it.

11
00:00:46,000 --> 00:00:48,000
Don't worry about that.

12
00:00:48,000 --> 00:00:49,000
We'll talk about this in a minute.

13
00:00:51,000 --> 00:00:58,000
Beside it, you have the accessibility options again, options to zoom in, zoom out, increase, contrast

14
00:00:58,000 --> 00:01:01,000
stuff that will just make it easier to use the system.

15
00:01:01,000 --> 00:01:04,000
We have the language selector in here.

16
00:01:04,000 --> 00:01:06,000
You can change the language if you wanted to.

17
00:01:06,000 --> 00:01:10,000
You can click on show keyboard layouts if you wanted to add more languages.

18
00:01:11,000 --> 00:01:17,000
Now going to the last icon in here, you can see the first thing we have is the volume controls.

19
00:01:18,000 --> 00:01:21,000
You can also see it's saying why it connected.

20
00:01:21,000 --> 00:01:26,000
This is because I have an Ethernet cable connected to this computer.

21
00:01:26,000 --> 00:01:30,000
That's why I have this computer is getting Internet connection.

22
00:01:30,000 --> 00:01:34,000
This is the easiest way to get Internet connection on tables.

23
00:01:34,000 --> 00:01:39,000
If you don't have an Ethernet cable, you can also connect using wi fi.

24
00:01:39,000 --> 00:01:47,000
Now keep in mind you'll only see this option, the wi fi option if tail supports your wi fi card or

25
00:01:47,000 --> 00:01:52,000
if it supports the wireless adapter that is connected to this computer.

26
00:01:52,000 --> 00:01:58,000
For example, it actually was not able to detect my built in wi fi card.

27
00:01:58,000 --> 00:02:06,000
And the only reason why I have this option here, because I have an external USB wireless adapter connected

28
00:02:06,000 --> 00:02:07,000
to this computer.

29
00:02:07,000 --> 00:02:14,000
So if you can't see the wi fi option here, it's probably because the wi fi card used in your computer

30
00:02:14,000 --> 00:02:16,000
is not supported by tables.

31
00:02:16,000 --> 00:02:23,000
I'll include the list of all wi fi adapters supported by tables in the resources of this lecture.

32
00:02:24,000 --> 00:02:28,000
Once you see this option, connecting to a wi fi network is trivial.

33
00:02:28,000 --> 00:02:30,000
All you have to do is just click here.

34
00:02:30,000 --> 00:02:32,000
Click on Select Network.

35
00:02:32,000 --> 00:02:35,000
Select the network that you want to connect to.

36
00:02:35,000 --> 00:02:38,000
Put the password and you'll be able to connect.

37
00:02:39,000 --> 00:02:44,000
And finally, you can also see the power settings in here of this computer.

38
00:02:45,000 --> 00:02:48,000
At the bottom here, we have a number of icons.

39
00:02:48,000 --> 00:02:51,000
The first one here will take you into the preferences.

40
00:02:51,000 --> 00:02:54,000
So I'll just click on it quickly to show you.

41
00:02:54,000 --> 00:03:00,000
And here you'll be able to change settings about the operating system, such as the background display,

42
00:03:01,000 --> 00:03:04,000
privacy settings, language settings and so on.

43
00:03:04,000 --> 00:03:11,000
Keep in mind right now our installation is not persistent, so anything you do will be lost as soon

44
00:03:11,000 --> 00:03:14,000
as you turn off this machine or restart it.

45
00:03:14,000 --> 00:03:17,000
We will talk about persistence later on in the course.

46
00:03:17,000 --> 00:03:21,000
So you should keep this in mind when change settings.

47
00:03:22,000 --> 00:03:30,000
Going back to the top right icon, we also have the lock icon in here which will lock this computer.

48
00:03:30,000 --> 00:03:34,000
Now, keep in mind, we started the session without a password.

49
00:03:34,000 --> 00:03:37,000
Remember, the admin password was disabled.

50
00:03:37,000 --> 00:03:44,000
Therefore, when you click on this, it will actually ask you for a password to set so that you can

51
00:03:44,000 --> 00:03:47,000
use that password to unlock the screen again.

52
00:03:47,000 --> 00:03:49,000
So let's say I put a password here.

53
00:03:50,000 --> 00:03:52,000
And then lock the screen.

54
00:03:53,000 --> 00:04:01,000
Now when I come back, hit enter and to log in now to my session, I'll have to use the password that

55
00:04:01,000 --> 00:04:02,000
I just said.

56
00:04:02,000 --> 00:04:05,000
Keep in mind, this is not an admin password.

57
00:04:05,000 --> 00:04:10,000
This is literally a password that we temporary set when we lock the screen.

58
00:04:11,000 --> 00:04:14,000
You can also pause the current session.

59
00:04:14,000 --> 00:04:18,000
You can restart or shut down using these buttons.

60
00:04:19,000 --> 00:04:26,000
Now the really cool thing about tails when you click on Shutdown or when you just disconnect the USB

61
00:04:26,000 --> 00:04:31,000
device that contains tails, it will automatically shut down securely.

62
00:04:31,000 --> 00:04:38,000
What I mean by that is, as we mentioned before, Tails never uses the built in storage of the computer

63
00:04:38,000 --> 00:04:40,000
that you run it on.

64
00:04:40,000 --> 00:04:42,000
It runs completely from RAM.

65
00:04:43,000 --> 00:04:49,000
This means that once you turn it off, it leaves no traces because RAM gets cleared every time you turn

66
00:04:49,000 --> 00:04:52,000
off the computer or restart it.

67
00:04:52,000 --> 00:05:00,000
Now, this is all good, but it actually takes a number of minutes, sometimes even up to four or 5

68
00:05:00,000 --> 00:05:03,000
minutes to completely clear the RAM.

69
00:05:03,000 --> 00:05:11,000
Therefore, if you just shut down the computer and someone grabs your computer, freezes the ram, this

70
00:05:11,000 --> 00:05:17,000
RAM will still contain information about your session, and that way they'll be able to store your RAM

71
00:05:17,000 --> 00:05:23,000
for a long period of time, as long as it's frozen, and then they'll be able to inspect it and get

72
00:05:23,000 --> 00:05:27,000
information about what you did while you were using tails.

73
00:05:28,000 --> 00:05:35,000
Therefore, when you actually click on Shut Down or disconnect the USB device, tails will perform a

74
00:05:35,000 --> 00:05:41,000
secure shutdown in which it will wipe the RAM before it completely shuts down.

75
00:05:41,000 --> 00:05:48,000
Therefore, if someone gets your computer and freezes the ram, there will still be no information about

76
00:05:48,000 --> 00:05:56,000
you because tails completely and properly clear the ram before it went off, before it shut down.

77
00:05:56,000 --> 00:06:01,000
So this is a really, really cool feature to prevent cold boot attacks.