A computer virus is a type of malware that can copy itself and infect a computer. Viruses can cause extensive damage to a computer system, including corrupting or deleting data, corrupting or disabling the computer’s operating system, or even rendering the computer unusable.
There are many different types of computer viruses, but the most common are executable files, macro viruses, and worms.
Executable files are programs that are designed to run on a computer. They can be infected with a virus, which will then be run when the program is executed.
Macro viruses are viruses that are written in a programming language that is used to create documents or spreadsheets. When a user opens a document or spreadsheet that has been infected with a macro virus, the virus will run and infect the computer.
Worms are programs that can replicate themselves and spread from one computer to another. They can be very harmful, as they can cause a large amount of damage in a short amount of time.
Contents
What is virus in computer explain?
A computer virus is a type of malicious software program that, once installed on a computer, can propagate itself to other computers on a network. It can also damage the infected computer system.
Viruses are typically spread through email attachments, downloaded files, or through infected websites. Once a computer is infected, the virus can do anything from deleting files to causing the computer to crash.
Some viruses are designed to steal personal information, such as login credentials or credit card numbers. Others are used to install spyware or ransomware on the victim’s computer.
Ransomware is a type of virus that encrypts all the files on the victim’s computer and then demands a payment to unlock them.
There are many different types of computer viruses, and new ones are being created all the time. It’s important to keep your computer’s antivirus software up-to-date and to be very careful about what files you download and open.
What are the 3 types of viruses?
There are three types of viruses: DNA viruses, RNA viruses, and retroviruses.
DNA viruses are the largest and most complex of the three types of viruses. They are made up of DNA, which is the genetic material of living cells. The viruses that cause colds and the flu are examples of DNA viruses.
RNA viruses are also made up of DNA, but they are much smaller than DNA viruses. They are also simpler in structure. The viruses that cause measles, mumps, and rubella are examples of RNA viruses.
Retroviruses are the smallest and simplest of the three types of viruses. They are made up of RNA, which is the genetic material of living cells. The human immunodeficiency virus (HIV), which causes AIDS, is a retrovirus.
What is computer virus give any two examples?
A computer virus is a type of malicious software program that, when executed, can propagate itself by infecting other computer programs and files, including documents. The term “virus” is also used to refer to other types of malware, including worms, Trojan horses and ransomware.
One of the most common ways for a computer virus to spread is by being attached to an email message and sent to other users. The user who opens the email message will then activate the virus, which will spread to other computers on the user’s network. Viruses can also be spread through file sharing networks, infected USB drives, and compromised websites.
Some of the most common symptoms of a computer virus infection include unexpected system crashes, unusual messages or alerts, slowdown in computer performance, and the inability to open or access files. In order to protect your computer from viruses, it is important to install and maintain up-to-date antivirus software, and to be careful about where you download files from and what websites you visit.
Some of the most well-known computer viruses include the Love Bug, the Melissa virus, the I Love You virus, and the Stuxnet virus.
What is virus in simple words?
What is a virus?
A virus is a small, self-replicating program that can attach itself to other programs or files, making them unusable. Viruses are often spread through email attachments, downloads, or shared files. They can also be transmitted through infected devices such as flash drives or smartphones.
Most viruses are designed to cause damage or steal information. They can delete or corrupt files, or install malware that can spy on your activities. Some viruses can even take over your computer, forcing it to run malicious programs or give hackers access to your personal information.
There are several ways to protect yourself from viruses. You can install antivirus software on your computer, be careful about what you download and open, and avoid using infected devices. You can also be careful about where you enter your personal information online, and be sure to create strong passwords.
What causes computer virus?
Computer viruses have been around since the early days of the personal computer. But what causes them?
There are many different ways that a computer virus can be introduced to a system. One of the most common ways is through infected software or files that are downloaded from the internet. Viruses can also be spread through email, instant messaging, or through infected removable media such as USB drives.
One of the ways that computer viruses are able to spread so quickly is because they can be very sophisticated. Many of them are able to avoid detection by antivirus software. And even if an antivirus program does manage to detect a virus, it can be very difficult to remove.
So what causes computer viruses? There are many different factors that can contribute, but the most common ones are infected software or files, and careless user behavior.
What are the top 5 computer viruses?
Computer viruses are a common occurrence on the internet. They can be transmitted through email, files, or websites. Once a computer is infected, the virus can cause a variety of problems, including data loss, system crashes, and identity theft.
There are many different types of computer viruses, but the five most common are the following:
1. Ransomware – This type of virus is designed to lock users out of their computer until a ransom is paid. Ransomware can be very difficult to remove, and can cause a great deal of damage to a computer.
2. Worms – Worms are self-replicating viruses that can spread quickly across a network. They can cause a great deal of damage to a computer system and can be difficult to remove.
3. Trojans – Trojans are viruses that masquerade as legitimate software. They can be used to steal information or damage a computer system.
4. Spyware – Spyware is a type of virus that collects information about a user without their knowledge. It can be used to steal passwords or personal information.
5. Adware – Adware is a type of virus that displays unwanted ads on a user’s computer. It can be used to track a user’s web browsing habits.
The best way to protect your computer from virus infection is to install antivirus software and keep it up-to-date. You should also be careful about where you download files from and what websites you visit.
What is a common virus?
A virus is a microscopic organism that can cause infection in plants and animals. Viruses are not considered to be living things because they cannot reproduce on their own. They are made up of genetic material (DNA or RNA) and a protein coat.
There are many different types of viruses, but some are more common than others. The common cold, for example, is caused by a virus. Other common viruses include the flu, measles, and chicken pox.
Viruses are spread through contact with infected people, animals, or objects. They can also be spread through the air, water, or food. Symptoms of viral infection vary depending on the virus, but may include fever, coughing, sore throat, and runny nose.
Viral infections can be treated with medications such as antibiotics, antivirals, or ibuprofen. Some infections, such as the common cold, will eventually go away on their own. Prevention of viral infections includes washing your hands regularly, avoiding close contact with sick people, and getting vaccinated.
