1
00:00:00,520 --> 00:00:07,090
How does a deadly US attack works now as attacks are carried out with networks of Internet connected

2
00:00:07,090 --> 00:00:07,540
machines?

3
00:00:08,230 --> 00:00:14,140
These network consist of computers and other devices, such as Iot devices which have been infected

4
00:00:14,140 --> 00:00:18,150
with a malware allowing them to be controlled remotely by an attacker.

5
00:00:18,400 --> 00:00:26,200
And these individual devices are referred to as bots or zombies and a group of what is called a botnet.

6
00:00:26,470 --> 00:00:29,040
Don't worry, we will talk about putting it in details.

7
00:00:29,710 --> 00:00:36,100
Now, once a unit has been established, the attacker is able to direct an attack by sending remote

8
00:00:36,100 --> 00:00:37,840
instructions to each bot.

9
00:00:38,350 --> 00:00:45,160
So when a victim, server or network is targeted by the botnet, each book sends request to the target

10
00:00:45,160 --> 00:00:52,090
IP addresses, potentially causing the server or network to become overwhelmed, resulting in denial

11
00:00:52,090 --> 00:00:53,590
of service to normal traffic.

12
00:00:54,500 --> 00:01:00,470
Because each what is legitimate internal device separating the attack, traffic from normal traffic

13
00:01:00,470 --> 00:01:01,430
can be difficult.

14
00:01:01,700 --> 00:01:02,290
Why is that?

15
00:01:02,300 --> 00:01:07,830
Because these are normal devices and maybe they are normal users, by the way.

16
00:01:08,270 --> 00:01:12,260
So how to distinguish between normal traffic and they do traffic?

17
00:01:12,740 --> 00:01:16,640
It is very hard when actually there are a lot of ways, but.

18
00:01:17,580 --> 00:01:19,710
It is not 100 percent accurate.

19
00:01:20,100 --> 00:01:23,190
OK, we will see them in the next lecture's.