WEBVTT 00:00.480 --> 00:00.930 Okay. 00:00.930 --> 00:04.290 So we're going to pick up from where we left in the previous lecture. 00:04.290 --> 00:10.650 And in this lecture, I'm going to continue showing you the basics of Thales, how to see the notifications, 00:10.650 --> 00:14.940 how to edit some of the settings, connect to networks and so on. 00:15.660 --> 00:20.990 And going back to the status bar, we have the time and the date in here. 00:21.000 --> 00:27.870 Now, if you also click on this, you'll get a nice calendar on the right and you'll also get the notification 00:27.870 --> 00:32.280 menu in here in which you'll see a list of system notifications. 00:33.540 --> 00:35.130 Continuing to the right. 00:35.130 --> 00:42.090 We have the onion icon right here, which shows us the status of the Tor circuit. 00:42.120 --> 00:46.760 Now, if you're not connected right now, you should see an X beside it. 00:46.770 --> 00:48.030 Don't worry about that. 00:48.030 --> 00:49.890 We'll talk about this in a minute. 00:51.010 --> 00:58.000 Beside it, you have the accessibility options again, options to zoom in, zoom out, increase, contrast 00:58.000 --> 01:01.630 stuff that will just make it easier to use the system. 01:01.900 --> 01:04.060 We have the language selector in here. 01:04.060 --> 01:06.580 You can change the language if you wanted to. 01:06.610 --> 01:10.960 You can click on show keyboard layouts if you wanted to add more languages. 01:11.770 --> 01:17.860 Now going to the last icon in here, you can see the first thing we have is the volume controls. 01:18.790 --> 01:21.610 You can also see it's saying why it connected. 01:21.610 --> 01:26.890 This is because I have an Ethernet cable connected to this computer. 01:26.890 --> 01:30.160 That's why I have this computer is getting Internet connection. 01:30.340 --> 01:34.480 This is the easiest way to get Internet connection on tables. 01:34.750 --> 01:39.640 If you don't have an Ethernet cable, you can also connect using wi fi. 01:39.760 --> 01:47.380 Now keep in mind you'll only see this option, the wi fi option if tail supports your wi fi card or 01:47.380 --> 01:52.210 if it supports the wireless adapter that is connected to this computer. 01:52.630 --> 01:58.630 For example, it actually was not able to detect my built in wi fi card. 01:58.750 --> 02:06.430 And the only reason why I have this option here, because I have an external USB wireless adapter connected 02:06.430 --> 02:07.780 to this computer. 02:07.960 --> 02:14.740 So if you can't see the wi fi option here, it's probably because the wi fi card used in your computer 02:14.740 --> 02:16.720 is not supported by tables. 02:16.930 --> 02:23.350 I'll include the list of all wi fi adapters supported by tables in the resources of this lecture. 02:24.150 --> 02:28.230 Once you see this option, connecting to a wi fi network is trivial. 02:28.260 --> 02:30.500 All you have to do is just click here. 02:30.510 --> 02:32.520 Click on Select Network. 02:32.550 --> 02:35.310 Select the network that you want to connect to. 02:35.340 --> 02:38.580 Put the password and you'll be able to connect. 02:39.830 --> 02:44.780 And finally, you can also see the power settings in here of this computer. 02:45.590 --> 02:48.180 At the bottom here, we have a number of icons. 02:48.200 --> 02:51.470 The first one here will take you into the preferences. 02:51.470 --> 02:54.350 So I'll just click on it quickly to show you. 02:54.650 --> 03:00.980 And here you'll be able to change settings about the operating system, such as the background display, 03:01.130 --> 03:04.310 privacy settings, language settings and so on. 03:04.610 --> 03:11.510 Keep in mind right now our installation is not persistent, so anything you do will be lost as soon 03:11.510 --> 03:14.150 as you turn off this machine or restart it. 03:14.180 --> 03:17.720 We will talk about persistence later on in the course. 03:17.990 --> 03:21.590 So you should keep this in mind when change settings. 03:22.850 --> 03:30.440 Going back to the top right icon, we also have the lock icon in here which will lock this computer. 03:30.470 --> 03:34.790 Now, keep in mind, we started the session without a password. 03:34.790 --> 03:37.510 Remember, the admin password was disabled. 03:37.520 --> 03:44.180 Therefore, when you click on this, it will actually ask you for a password to set so that you can 03:44.180 --> 03:47.050 use that password to unlock the screen again. 03:47.060 --> 03:49.460 So let's say I put a password here. 03:50.620 --> 03:52.450 And then lock the screen. 03:53.740 --> 04:01.330 Now when I come back, hit enter and to log in now to my session, I'll have to use the password that 04:01.330 --> 04:02.290 I just said. 04:02.980 --> 04:05.440 Keep in mind, this is not an admin password. 04:05.440 --> 04:10.480 This is literally a password that we temporary set when we lock the screen. 04:11.550 --> 04:14.390 You can also pause the current session. 04:14.400 --> 04:18.150 You can restart or shut down using these buttons. 04:19.100 --> 04:26.360 Now the really cool thing about tails when you click on Shutdown or when you just disconnect the USB 04:26.360 --> 04:31.310 device that contains tails, it will automatically shut down securely. 04:31.790 --> 04:38.990 What I mean by that is, as we mentioned before, Tails never uses the built in storage of the computer 04:38.990 --> 04:40.220 that you run it on. 04:40.250 --> 04:42.410 It runs completely from RAM. 04:43.100 --> 04:49.910 This means that once you turn it off, it leaves no traces because RAM gets cleared every time you turn 04:49.910 --> 04:52.130 off the computer or restart it. 04:52.700 --> 05:00.770 Now, this is all good, but it actually takes a number of minutes, sometimes even up to four or 5 05:00.770 --> 05:03.440 minutes to completely clear the RAM. 05:03.590 --> 05:11.150 Therefore, if you just shut down the computer and someone grabs your computer, freezes the ram, this 05:11.150 --> 05:17.570 RAM will still contain information about your session, and that way they'll be able to store your RAM 05:17.570 --> 05:23.420 for a long period of time, as long as it's frozen, and then they'll be able to inspect it and get 05:23.420 --> 05:27.620 information about what you did while you were using tails. 05:28.520 --> 05:35.450 Therefore, when you actually click on Shut Down or disconnect the USB device, tails will perform a 05:35.450 --> 05:41.570 secure shutdown in which it will wipe the RAM before it completely shuts down. 05:41.600 --> 05:48.020 Therefore, if someone gets your computer and freezes the ram, there will still be no information about 05:48.020 --> 05:56.360 you because tails completely and properly clear the ram before it went off, before it shut down. 05:56.630 --> 06:01.430 So this is a really, really cool feature to prevent cold boot attacks.