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Well, let's conclude this section by learning the countermeasures.

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It is important to learn how to mitigate cyber attacks by learning the countermeasures.

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So in this lecture, we will see how countermeasures Trojan attacks and how we can prevent megadose,

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like how we can stop an attacker from installing and backdoor and then virus and Romes countermeasures.

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If you know the bomb and the virus difference, the only difference is that womb's are not self replicating.

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Virus viruses are sort of replicating.

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So without wasting much time, let us start Trojan countermeasures.

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So avoid opening e-mail attachments received from unknown senders, then block unnecessary ports and

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the host and the firewall avoid accepting programs transferred by instant messaging applications, harden

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weak default configuration settings and disable unused functionality.

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This what I said just a few seconds ago is known as security misconfiguration, this happens a lot of

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time.

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Generally, the administrator who has installed softwoods forgets it to configure it properly.

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He or she ignores the fact that, you know, the administrator and no one will have password and all

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those things.

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But attackers are one step ahead.

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Then the security professionals may always find a way to breach into the system.

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So and security professional security expert should know each and every step of how Endako can think

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to enter into your PC.

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So that is why they always see security architects or security officers professional always need to

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think from the perspective of an heckel.

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Then the next step is to monitor the entire network traffic for Allport or encrypted traffic, then

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avoid downloading and executing applications from untoasted sources.

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I have been telling this since the start of the lecture.

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I know, but it's really important that we download it from the official windows, then install patches

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and security updates for the operating systems and applications, scan external USB devices and DVD

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with antivirus software before using then the district permissions within the next top environment to

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prevent malicious applications from being installed and reinforced with antivirus firewalls and ideas

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like this.

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How we can prevent hackers from placing back doors.

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The most commercial antivirus products can automatically scan and detect backdoor programs before they

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can cause damage.

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So it is important that you install commercial programs.

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Then you have to educate users not to install applications downloaded from untoasted Internet sites

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and e-mail attachments, avoid untoasted software and ensure that every device is protected by a firewall.

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Use the antivirus tools such as McAfee, Norten, etc., to detect and eliminate back doors.

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I would like to tell you that when before I started studying for security, when I was in my school,

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I was always fond of downloading free Microsoft Office.

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And one day without telling my father I downloaded the free Microsoft Office would have activated it.

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I was very sharp in computers and, you know, accessing all those data from the web.

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I extracted the passwords I downloaded.

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I was nine to 10, I guess.

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I don't remember exactly.

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It's been almost eight to nine years.

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So and the moment I installed it and it was working perfectly fine and it activated our windows, the

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latest version of Microsoft Office and every mom appearance, everyone was happy that I had done such

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a great task.

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And all my dad's work was on that PC in that in that piece on the software is all his photos, all our

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family photos, all our documents, everything.

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And after 15 days, exactly 15 days, the Microsoft Office started getting an Arab activist.

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Otherwise you wouldn't be able to access any of the Microsoft files.

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So, you know, and I thought it was just an error.

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So I just shut down the windows and I restarted it for 10 to 15 times.

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But that error still persisted.

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And after that, my dad wasn't able to access a single file from Microsoft Office.

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He tried, you know, downloading those files from one side to another week, but to no avail.

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And unfortunately, he lost his entire data.

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And I just cannot forget that incident.

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And from that incident, I've always learned to download files only from legitimate source.

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That is, I also tell my friends and my colleagues that please do not fall into the breach of free software.

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There are there is nothing like free Microsoft Word because no one is able to actually download it at

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some point of time or the other.

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The application reverts back.

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So again, me, you learn from my lesson.

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I learned from experience that you should always download it from legitimate sources.

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And then moving ahead, you have to deploy firewalls and Libyans, make sure you inspect the network

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packets using protocol, monitoring tools, and then use antivirus tools such as McAfee and trusted

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third party tools.

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And last, this virus countermeasures.

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So the most common is install antivirus software and update it regularly, generate antivirus policy

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for safe browsing and computing, then schedule regular scans for all drivers after installation of

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antivirus software regularly maintain data backup, which I a mistake, redetermined it in any backup.

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Then stay informed about the latest virus threats.

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Keep reading different blogs, security websites to get used to latest trends and technologies.

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Then run this clean up and adjust to this kind of once a week.

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Clean up the temporary files every day, run antivirus spyware, add once a week and do not accept disks

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or programs without checking them first with your software.

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So you know you should be able to tell your friends that please do not do this.

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And being a security student, you should be able to protect other students data.

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Then let us have a quick recap.

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We discuss how to prevent a cyber threat.

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We saw countermeasures for files ones and also saw how I used to deal with freedoms.

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And finally, Girma strike back and I lost all of my data and then make sure you apply these countermeasures

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in your real life.