What are the ways in which a virus can infect your system?

Viruses can enter your computer in any number of ways, such as via an email attachment, during file downloads from the Internet or even upon a visit to a contaminated Web site.

What are 4 common ways that computer viruses are contracted?

Methods of Malware and Virus Infection and Spread Downloading infected files as email attachments, from websites or through filesharing activities. Clicking on links to malicious websites in emails, messaging apps or social network posts.

Can a virus execute itself?

A virus typically attaches itself to a program, file, or the boot sector of the hard drive. Once the virus attaches itself to that file or program (aka, the host), they’re infected. When the infected application or file runs in the computer, the virus activates and executes in the system.

How does a virus infect a computer answer?

A virus operates by inserting or attaching itself to a legitimate program or document that supports macros in order to execute its code. In the process, a virus has the potential to cause unexpected or damaging effects, such as harming the system software by corrupting or destroying data.

What is virus and its types in computer?

A computer virus is one type of malware that inserts its virus code to multiply itself by altering the programs and applications. The computer gets infected through the replication of malicious code. Computer viruses come in different forms to infect the system in different ways.

What is the most common methods for spreading viruses?

5 Common Ways Germs are Spread

• Nose, mouth, or eyes to hands to others: Germs can spread to the hands by sneezing, coughing, or rubbing the eyes and then can be transferred to other family members or friends.
• Hands to food:
• Food to hands to food:
• Infected child to hands to other children:
• Animals to people:

What is the most common method of virus propagation in computer?

The most common way of transmission of computer viruses in boot sector is physical media. When reading the VBR of the drive, the infected floppy disk or USB flash drive connected to the computer will transfer data, and then modify or replace the existing boot code.

Which of the following is the most common method for delivering malware?

1. Downloading malicious apps. The most common method hackers use to spread malware is through apps and downloads.

What are the most common sources of malware and viruses?

Where does malware come from? Some of the most common sources of malware are email attachments, malicious websites, torrents, and shared networks.

How is a virus executed?

What is the program that copies itself?

Discussion Forum

Que.	A program that copies itself.
b.	Virus
c.	Trojan
d.	Bomb
	Answer:Worm

What happens when you have a virus on your computer?

Once the boot code on the drive is infected, the virus will be loaded into memory on every startup. From memory, the boot virus can spread to every disk that the system reads. Boot sector viruses are typically very difficult to remove, as most antivirus programs cannot clean the MBR while Windows is running.

How do viruses hide themselves from antivirus programs?

Some classes of viruses hide themselves by tracking the code snippets anti-virus programs use to identify them and then altering that code snippet every time the virus is injected into a new machine. They change their signature so that it is unique on every infected machine. The anti-virus program is then duped.

How do viruses use encryption to avoid detection?

The third way a virus uses encryption to avoid detection is within an executable file. Here, the virus has been encrypted and is hiding within an executable file waiting for a defined set of actions to decrypt itself and execute.

How does a boot virus spread?

From memory, the boot virus can spread to every disk that the system reads. Boot sector viruses are typically very difficult to remove, as most antivirus programs cannot clean the MBR while Windows is running.