WEBVTT 00:01.080 --> 00:01.400 Okay. 00:01.440 --> 00:07.600 In the previous lecture, we created this simple keylogger that is capturing only the keys that we were 00:07.600 --> 00:08.120 pressing. 00:08.880 --> 00:18.040 And here, as you see that while we are pressing each key, it is showing me that key in one new line. 00:18.040 --> 00:25.960 We want to send this into an email or into a server, or even writing into a file. 00:26.240 --> 00:28.120 We need to here, as you see. 00:28.160 --> 00:35.760 For example, if you're pressing 100 keys so it will send 100 emails to a person or the email you're 00:35.760 --> 00:36.400 providing. 00:37.000 --> 00:37.240 So. 00:39.360 --> 00:44.160 The best solution for this is to have a global variable here okay. 00:44.600 --> 00:51.400 So while we are having a global variable we can add or we can concatenate each keys that is adding or 00:51.400 --> 00:55.080 that that the user or the victim is entering. 00:55.680 --> 01:00.920 So for that we need to use let's create a variable. 01:00.960 --> 01:02.280 Name it log. 01:02.320 --> 01:05.730 It is equal to an empty string right now. 01:05.770 --> 01:09.370 Okay, so we have this empty. 01:09.410 --> 01:10.970 This empty string is here. 01:11.570 --> 01:14.370 Now we have the key here. 01:14.410 --> 01:14.850 Okay. 01:15.170 --> 01:19.850 Each time that person is entering the key, we need to add this into the lock. 01:20.210 --> 01:21.450 So very easy. 01:21.490 --> 01:26.130 Log is equal to log plus key. 01:26.170 --> 01:30.450 And you may know or may not know that this key is not a string. 01:30.450 --> 01:31.810 It is an object okay. 01:31.850 --> 01:33.050 Object type of key. 01:33.450 --> 01:35.410 So we need to change this to a string. 01:35.450 --> 01:36.610 So very good. 01:38.050 --> 01:38.650 STR. 01:40.930 --> 01:42.410 STR finished. 01:43.170 --> 01:45.370 And now let's print the log. 01:45.490 --> 01:48.970 And let's see how does it looks like. 01:50.210 --> 01:50.650 Okay. 01:55.890 --> 01:56.450 Oops. 01:56.890 --> 01:58.530 Use Ctrl c. 01:58.570 --> 02:00.050 Let's clear this. 02:06.250 --> 02:06.690 Okay. 02:06.730 --> 02:09.010 Can't open file. 02:10.370 --> 02:12.210 No such file or directory. 02:12.250 --> 02:15.490 What do you mean you don't? 02:15.490 --> 02:19.410 We have in here Python key logger. 02:22.890 --> 02:23.290 Oops. 02:24.410 --> 02:25.090 This again. 02:26.770 --> 02:28.090 Let me use RLS. 02:29.930 --> 02:32.610 We have this okay. 02:32.650 --> 02:36.050 Python key logger.py hit enter. 02:37.370 --> 02:39.250 So right now it is waiting to write something. 02:39.250 --> 02:42.170 Let's here write r. 02:42.490 --> 02:45.530 And you see again it is giving me an error. 02:45.930 --> 02:47.570 And that is log is equal to. 02:47.610 --> 02:53.690 This cannot access local variable log where it is not associated with a value. 02:53.690 --> 02:54.250 Okay. 02:55.410 --> 02:56.170 Beautiful. 02:57.290 --> 03:01.690 You see we are having log here which is out of this function. 03:01.690 --> 03:03.730 And we are using it inside the function. 03:04.170 --> 03:08.850 We need to use something called global variable okay. 03:08.890 --> 03:16.060 We need to use global and then global keyword and then name of this uh, variable. 03:16.100 --> 03:16.460 Okay. 03:17.060 --> 03:17.260 So. 03:20.380 --> 03:31.180 Here let me use once again execute this and let's, uh, hit backspace and then write R again. 03:31.220 --> 03:32.420 R again. 03:32.460 --> 03:34.820 R backspace. 03:34.820 --> 03:36.980 Let's write hello world. 03:37.740 --> 03:38.420 Hit enter. 03:39.260 --> 03:43.780 And here right now you see that we have backspace okay. 03:44.300 --> 03:45.380 We have three R. 03:45.420 --> 03:49.620 We have backspace backspace backspace backspace. 03:49.620 --> 03:55.140 We have hello space world key enter. 03:55.180 --> 03:59.060 So now if we want to send this to an email. 03:59.300 --> 04:03.460 So we will be sending all these into an email. 04:03.460 --> 04:05.900 And right now it is more readable okay. 04:05.940 --> 04:10.780 Or if you want to write this into a text file we will be opening a txt file. 04:10.780 --> 04:14.220 And we can write this into a file okay. 04:14.900 --> 04:17.620 We will be improving this in the next lecture. 04:17.820 --> 04:20.220 So let's go and see that.