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In the current technological era, coming

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across different computer problems

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related to malware and cyber tax is

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common.

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According to AV test institute, there are

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more than one billion malware programs

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available.

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And new malware programs are detected

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regularly.

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Hi guys, and welcome to yet another

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interesting video by simply learn but

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before we begin. If you love watching

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tech videos, subscribe to our channel and

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hit the bell icon to never miss an

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update.

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In this video, we'll understand what is a

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malware program?

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Then, we'll see what exactly are viruses

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and trojans.

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Then, we will see how they operate in a

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system.

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And then different types of viruses and

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trojan,

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and how to detect the activity of such

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programs.

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And lastly, we will see how to prevent

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our system from getting infected by such

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programs.

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Malware is a malicious software that is

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programmed to cause damage to a computer.

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System network and hardware devices.

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Many malicious programs like trojan

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viruses worms and bots which cause

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damage to the system are known as

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malware. Most of the malware programs are

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designed to steal information from the

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targeted user

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or to steal money from the target by

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stealing sensitive data.

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Let's take a look at the introduction

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for two different types of malware virus,

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and trojan.

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Firstly, let's take a look what exactly

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is a virus program.

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A computer virus is a type of malicious

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program that on execution replicates

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itself.

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They get attached to different files and

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programs, which are termed as host

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programs by inserting their code. If the

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attachment succeeds, the targeted program

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is termed as infected with a computer

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virus.

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Now, let's take a look at the trojan

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horse.

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Trojan horse program is a program that

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disguises itself as a legitimate program,

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but harms the system on installation.

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They hide within the attachments and

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emails then transfer from one system to

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another they create bad doors into a

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system to allow the cyber criminal to

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steal our information.

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Let's take a look how they function

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after getting installed into our system.

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Firstly, we have virus programs the

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computer virus must contain two parts to

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infect the system.

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First is a surge routine which locates

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new files and data that is to be

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infected by the virus program.

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And the second part is known as the copy

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routine, which is necessary for the

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program to copy itself into the targeted

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file, which is located by the search

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routine now let's take a look at the

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trojan horse functioning

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for trojan horses entryway into our

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system is through emails that may look

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legitimate, but may have unknown

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attachments. And when such files are

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downloaded into the device, the trojan

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program gets installed and infects the

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system.

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They also infect the system on the

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execution of infected application or the

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executable file and attacks the system.

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Now, that we understand what virus and

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trojans are let's understand different

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types of virus androgens.

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Let's take a look at different types of

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viruses.

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The first one is known as the booth

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sector virus. This type of virus damages

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the booting section of the system by

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infecting the master bot record, which is

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also known as MBR.

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This damages the boot sector section by

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targeting the hard disk of the system.

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Then we have the macro virus.

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Micro virus is a type of virus that gets

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embedded into the document related data,

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and is executed when the file is opened.

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They also are designed to replicate

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themselves, and infect the system on a

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larger scale.

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And lastly, we have the direct action

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virus.

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This type of virus gets attached to

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executable files, which on execution

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activates the virus program and infects

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the system. Once the infection of the

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file is completed, they exit the system

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which is also the reason it is known as

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a non-resident virus.

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Let's take a look at different types of

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trojans.

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The first type of trojan is the backdoor

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trojan.

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They are designed to create a backdoor

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in the system on execution of an

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infected program.

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They provide remote access of our system

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to the hacker. This way, the cyber

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criminal can steal our system data and

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may use it for illegal activities. Next,

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we have

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quick source trojan.

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They enter the system by clicking the

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random pop-ups which we come across on

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the internet.

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They attempt a user to give their

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personal details for different

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transactions or schemes,

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which may provide remote access of a

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system to the cyber criminal.

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And the last trojan type is ransom

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trojan.

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This type of trojan program after

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entering the system blocks the user from

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accessing

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its own system. And also affects the

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system functioning

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the cyber criminal demands a ransom from

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the targeted user for the removal of the

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trojan program from the device.

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Now, that we understand some details

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regarding viruses and trojan, let's solve

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a question.

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The question is Jake was denied access

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to his system, and he wasn't able to

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control the data and information in his

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system.

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Now,

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the actual question is what could be the

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reason behind his system's problem?

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Option A: macro virus, Option B: ransom

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trojan, Option C: backward version.

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Give your answers in the comment section.

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Now, let's understand how to detect the

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activity of viruses and trojan in our

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system

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to detect virus or trojan activity in a

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system, we can refer to the following

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points

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for viruses. We have

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slowing down of the system and frequent

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application freeze shows that the

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infection of the virus is present in the

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system.

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Then, we have the viruses can also steal

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sensitive data including passwords,

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account details,

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which may lead to unexpected log out

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from the accounts or corruption of the

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sensitive data.

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And lastly, we have frequent system

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crashes due to virus infection which

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damages the operating system.

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For trojan, we have frequent system

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crashes and system also faces slow

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reaction time.

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Then, we have there are more random

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pop-ups from the system which may

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indicate trojan activity.

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And lastly, we have modification in the

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system application and change of the

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desktop appearance can be also due to

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the infection of a trojan program.

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Next, let's take a look at a famous cyber

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attack for virus and a trojan horse.

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For virus, we have

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the my doom virus which was identified

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in the ER 2004, which affected over 50

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million systems by creating a network of

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sending spam emails,

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which was to gain backdoor access into

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our systems.

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Next for the trojan horse, we have the

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emote trojan program

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which is specifically designed for

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financial theft and for stealing bank

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related information.

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Next, we have few points for how to

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prevent virus entry or trojan attack for

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a system.

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The most basic way of virus protection

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is to using antivirus and do regular

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viruses can

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this will prevent virus entry in the

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system, and also having more than one

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antivirus provides much better

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protectionm

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then avoid visiting uncertified websites

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can also prevent virus entry into our

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systemm

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then we have

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using regular driver updates and system

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updates to prevent virus entry for

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trojan. We have using certified softwares

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from legal sites to prevent any trojan

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activity in our system,

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and also avoid clicking random pop-ups

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that we often see on the internet

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and lastly using antivirus and firewalls

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for protection against trojan horses is

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a good habit,

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Now, that we have reached the end of the

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video, let's take a look what we learnt

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for the first part. We saw the main

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objective of the virus is to harm the

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data and information in a system whereas

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for the trojan, we have stealing of the

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data files and information

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effect of viruses is more drastic in

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comparison to the trojan horses.

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Then we have viruses which are

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non-remote programs whereas trojan

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horses are remote accessed.

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And lastly,

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viruses have the ability to replicate

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itself to harm multiple files whereas

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trojan does not have the

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replication ability.

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If you have any questions, you can ask

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them on the comment section. Thank you

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for watching.

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