1 00:00:01,560 --> 00:00:08,550 OK so now that we know that the normal file sharing services are not great when sharing sensitive files 2 00:00:08,880 --> 00:00:15,930 even if the use end to end encryption such as Firefox has sent service in this lecture I want to show 3 00:00:15,930 --> 00:00:19,500 you a more private method to share files. 4 00:00:19,500 --> 00:00:21,900 Now this method is peer to peer. 5 00:00:21,900 --> 00:00:28,680 Now remember we said the main problem was not about encryption but it was the fact that our files were 6 00:00:28,680 --> 00:00:31,950 stored somewhere that we have no control on. 7 00:00:32,940 --> 00:00:38,850 So and the method that I'm going to show you in this lecture our files will not be stored in a server 8 00:00:38,880 --> 00:00:40,350 that we don't control. 9 00:00:40,350 --> 00:00:42,120 It's going to be stored locally. 10 00:00:42,120 --> 00:00:47,850 It's going to be peer to peer so the file will be shared from our computer to the computer of the person 11 00:00:47,910 --> 00:00:50,160 that we want to share the file with. 12 00:00:50,160 --> 00:00:52,330 It's going to use end to end encryption. 13 00:00:52,340 --> 00:00:56,250 It's going to benefit from the anonymity offered by data network. 14 00:00:56,280 --> 00:00:59,620 Therefore it's going to be more private and more anonymous. 15 00:01:00,960 --> 00:01:04,930 And this method we're going to be using a tool called on in share. 16 00:01:04,950 --> 00:01:12,930 And to put this simply the way this will work is it will create an online service on your computer so 17 00:01:12,960 --> 00:01:19,500 others can access this online service and download your file so you can think of it as if it's creating 18 00:01:19,620 --> 00:01:22,990 a dark web web site on your local computer. 19 00:01:23,100 --> 00:01:28,260 And this Web site can only be used to download the files that you specify. 20 00:01:28,590 --> 00:01:35,370 To make this simpler you can think of this the as the user that wants to download your file and we all 21 00:01:35,370 --> 00:01:41,490 have seen this diagram of the Tor network and how when you try to access a hidden service you go over 22 00:01:41,490 --> 00:01:48,690 three nodes the user that you want to share the file with Will and at an online service that is sharing 23 00:01:48,690 --> 00:01:57,000 your file and this online service is running from your own local computer so the file is shared directly 24 00:01:57,000 --> 00:02:02,970 from your computer and you can shut down this sharing service whenever you want whenever you feel that 25 00:02:02,970 --> 00:02:09,320 you don't want to share the file anymore or whenever you feel like your connection is being compromised. 26 00:02:09,360 --> 00:02:15,630 So as you can see in this example we are not uploading our file to a server that we do not own or do 27 00:02:15,630 --> 00:02:21,960 not control therefore it fixes the main issue with the method that I showed you with the Firefox service 28 00:02:22,440 --> 00:02:26,900 and it benefits from all of the encryption implemented by the Tor network. 29 00:02:26,940 --> 00:02:34,780 Therefore it's more private more secure and more anonymous now doing this is actually very very simple 30 00:02:34,780 --> 00:02:35,750 and tells. 31 00:02:35,830 --> 00:02:37,010 So let me show you. 32 00:02:37,120 --> 00:02:43,600 I'm back at my file the manager I have the picture or the file that I want to share right here and all 33 00:02:43,600 --> 00:02:52,040 they have to do is right click this file and click on share via on and share as you can see. 34 00:02:52,040 --> 00:02:56,260 This will open the online share window for you. 35 00:02:56,490 --> 00:03:02,520 You can see the file that I selected is already in here and you can click on Add files to either more 36 00:03:02,520 --> 00:03:09,660 files to share with a specific person you can add a full folder by clicking here and you can use the 37 00:03:09,660 --> 00:03:12,270 delete to delete files. 38 00:03:12,270 --> 00:03:14,720 You can also see the checkbox in here ticked. 39 00:03:14,730 --> 00:03:16,620 Stop sharing automatically. 40 00:03:16,620 --> 00:03:23,030 This basically means once someone downloads this file the sharing will stop automatically. 41 00:03:23,130 --> 00:03:28,250 You can unpick this to keep sharing the file until you manually Stop it. 42 00:03:28,620 --> 00:03:32,940 Once you're happy with the files that you want to share we're going to click on Start sharing. 43 00:03:33,810 --> 00:03:40,020 And right now when you see the yellow dot in here this means that online share is creating and starting 44 00:03:40,260 --> 00:03:43,590 the online service that will share the files for you. 45 00:03:43,590 --> 00:03:45,300 So you want to be patient with this. 46 00:03:45,300 --> 00:03:52,110 It might take some time and wants this is done as you can see the circle will turn green and you will 47 00:03:52,110 --> 00:03:58,440 see a link to a head in service so you can see this looks very very similar to the links that we use 48 00:03:58,650 --> 00:04:06,600 when accessing darknet Web sites you can click on copy or l to copy it and then you can share this link 49 00:04:06,780 --> 00:04:09,870 with anybody that you want to share the file with. 50 00:04:09,870 --> 00:04:15,900 So you can send it via email or you can send it using in an instant message like what I'm gonna do right 51 00:04:15,930 --> 00:04:20,730 now so I'm gonna paste the link in here. 52 00:04:20,730 --> 00:04:25,290 You can go ahead enter to send it and then I'm gonna go to a second computer. 53 00:04:25,290 --> 00:04:28,620 We're gonna pretend that this is the recipient's computer. 54 00:04:28,620 --> 00:04:35,310 As you can see they got a message with a link in here and all they have to do is click on this link. 55 00:04:35,310 --> 00:04:42,630 Now keep in mind this is a hidden service or an online service link so it can only be accessed using 56 00:04:42,750 --> 00:04:47,770 the Tor browser or using a computer that is configured to use the term network. 57 00:04:48,030 --> 00:04:55,230 So this service is only accessible within the Tor network as you can see it wants this loads. 58 00:04:55,230 --> 00:04:57,720 You will get a very simple page. 59 00:04:57,750 --> 00:05:04,860 It has the file name it has the size and if you click on Download it will download the file for you. 60 00:05:04,860 --> 00:05:10,940 I'm going to click on Save and this will automatically go to the Tor Browser directory. 61 00:05:10,960 --> 00:05:18,160 I'm going to click on Save and perfectly download this complete and we can verify this by going here 62 00:05:19,300 --> 00:05:26,110 now as you can see the file has a ZIP format it's not an image and you will always get the file in a 63 00:05:26,110 --> 00:05:28,990 Zip format when using on your and share. 64 00:05:28,990 --> 00:05:35,260 So you have to uncompressed this file and to do that we're going to right click the file click on extract 65 00:05:35,260 --> 00:05:39,990 here and go inside the directory that just got created. 66 00:05:40,090 --> 00:05:45,080 And as you can see we have the image that we wanted to share. 67 00:05:45,100 --> 00:05:52,210 Now if you actually go back to the computer that started sharing you will see that in the status bar. 68 00:05:52,240 --> 00:05:58,110 It's telling us that someone has loaded the download page and that someone has downloaded the file. 69 00:05:58,900 --> 00:06:05,350 So if you actually ticked this box this would have stopped sharing the file automatically because someone 70 00:06:05,350 --> 00:06:12,640 has downloaded the file or if you want to stop it manually you can click on stop sharing to stop sharing. 71 00:06:12,640 --> 00:06:16,540 So now if anyone tries to access this link again. 72 00:06:16,540 --> 00:06:24,610 So if I refresh here you'll see that this page will not load therefore you have full control over the 73 00:06:24,610 --> 00:06:26,280 files that you want to share. 74 00:06:26,290 --> 00:06:29,690 You can start and stop sharing them anytime you want. 75 00:06:29,770 --> 00:06:35,040 The files will not be placed in any computer that you do not have control on. 76 00:06:35,040 --> 00:06:41,490 So it'll only be placed on your computer and you'll benefit from tourists anonymity and privacy. 77 00:06:41,560 --> 00:06:46,870 Therefore this is a much more private method of sharing sensitive files.