What is a computer virus?
Computer viruses are small programs that can attach themselves to other programs or documents and spread from one computer to another. They can cause a lot of damage, including deleting files, reformatting hard drives, or even making your computer unusable.
Most viruses are spread through email, or by downloading files or programs from the internet. They can also be spread through removable media, like USB drives, CDs, or floppy disks.
There are a number of ways to protect your computer from viruses, including using anti-virus software, being careful about what you download, and keeping your computer up to date with the latest security patches.
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What are 4 computer viruses?
The topic of computer viruses is one that is fraught with anxiety for many people. After all, who wants their computer to be infected with a virus? In this article, we will discuss what computer viruses are, and we will provide information on four of the most common ones.
What is a computer virus?
A computer virus is a type of malware that is designed to infect a computer system. Once a computer is infected, the virus can spread to other systems, and it can also, in some cases, steal data or passwords.
What are some of the most common computer viruses?
There are many different types of computer viruses, but some of the most common ones are the following:
1. The Trojan horse virus – This is a type of virus that is disguised as a legitimate program. When the user downloads the program, the virus is installed on the computer.
2. The ransomware virus – This type of virus encrypts the user’s files and then demands a ransom payment in order to decrypt them.
3. The spyware virus – This type of virus collects information about the user’s activities and sends it back to the author of the virus.
4. The worms virus – This type of virus is self-replicating and can spread to other systems very quickly.
What is computer virus example?
A computer virus is a type of malicious software program that, when executed, replicates by copying itself to other computer programs, data files, or removable media. Viruses can cause extensive damage to systems and files. Some viruses are designed to disable or even destroy systems, while others are designed to steal personal or financial information.
The first computer virus was created in 1983 by programmer Richard Skrenta. The virus, called Elk Cloner, was a self-replicating program that infected Apple II computers. Elk Cloner displayed a message on infected computers that read “Elk Cloner: The program that will copy itself to your fined [sic] disks and infect all the computers on your network.”
Today, computer viruses are very common and can be found in a variety of forms. Some of the most common types of computer viruses include:
– Worms: Worms are self-replicating programs that spread through networks and systems. Worms can cause extensive damage to systems and files.
– Trojan horses: Trojan horses are programs that appear to be something else, such as a useful computer program or file, but are actually designed to harm or steal information from systems.
– Spyware: Spyware is software that is designed to collect information about users without their knowledge or consent. Spyware can track user activity, collect passwords and financial information, and even send spam messages.
– Adware: Adware is software that displays advertisements on users’ computers. Adware can be intrusive and annoying, and can also track user activity and collect personal information.
– Ransomware: Ransomware is a type of malware that locks users’ computer files or systems and demands a ransom payment to unlock them. Ransomware can cause extensive damage to systems and files.
The best way to protect your computer from viruses is to install antivirus software and keep it up-to-date. Antivirus software can detect and remove viruses from your computer. It is also important to be careful about the websites you visit and the files you download, and to never open email attachments from unknown sources.
What is the 1st virus in computer?
The 1st virus in computer was created by two brothers, Rich and Gary White, in 1986. The virus, called “Brain”, was a simple program that attached itself to other programs and then replicated itself when the program was run.
What are the 3 types of viruses in computer?
There are three main types of computer viruses: file infectors, boot sector viruses, and macro viruses.
File infectors are viruses that attach themselves to executable files, such as .exe, .com, and .bat files. When a user tries to run the infected file, the virus also runs, and may infect other files on the computer.
Boot sector viruses are viruses that infect the boot sector of a disk, which is the first sector that is loaded when a computer starts up. This type of virus can be very difficult to get rid of, as it is stored in the part of the disk that is used to start up the computer.
Macro viruses are viruses that are written in a programming language that is used to create documents, such as Microsoft Word and Excel. When a user opens an infected document, the virus runs, and may infect other documents on the computer.
What are 7 types of computer virus?
Computer viruses can be classified into seven main types based on their behavior.
1. Boot sector viruses: This is the most common type of virus. It infects the boot sector of a computer’s hard drive, which is the first sector that is loaded into memory when the computer starts up. This type of virus can be very difficult to remove.
2. File infectors: This type of virus infects files on a computer’s hard drive. It can be spread through email attachments, floppy disks, or shared files on the internet.
3. Macro viruses: This type of virus is found in Microsoft Office documents. It is activated when the document is opened and can infect other documents on the user’s computer.
4. Script viruses: This type of virus is found in script files, such as JavaScript or VBScript files. It is activated when the file is run and can infect other files on the user’s computer.
5. Polymorphic viruses: This type of virus is able to change its appearance each time it infects a computer. This makes it difficult for antivirus software to detect and remove it.
6. Trojan horses: This type of virus is not actually a virus, but a program that appears to be harmless but actually performs malicious activities when run.
7. Worms: This type of virus is a self-replicating program that spreads through computer networks.
What are 10 types of computer viruses?
A computer virus is a type of malware that can copy itself and infect a computer. Viruses can cause serious damage to your computer, including corrupting data, deleting files, or making your computer unusable.
There are many different types of computer viruses, but here are 10 of the most common:
1. Boot sector virus: A boot sector virus is a type of virus that infects the boot sector of a computer’s hard drive. This type of virus is particularly dangerous because it can infect the computer’s operating system and make it unusable.
2. File infector virus: A file infector virus is a type of virus that infects files on a computer. This type of virus can cause serious damage to your computer, including deleting files or making your computer unusable.
3. Macro virus: A macro virus is a type of virus that infects documents or spreadsheets. This type of virus can cause serious damage to your computer, including deleting files or making your computer unusable.
4. Worm: A worm is a type of virus that spreads through computer networks. Worms can cause serious damage to your computer, including corrupting data or making your computer unusable.
5. Trojan horse: A Trojan horse is a type of virus that tricks you into installing it on your computer. Trojan horses can cause serious damage to your computer, including stealing your data or making your computer unusable.
6. Spyware: Spyware is a type of virus that tracks your activities and sends the information back to the virus author. Spyware can cause serious damage to your computer, including stealing your data or making your computer unusable.
7. Adware: Adware is a type of virus that displays ads on your computer. Adware can cause serious damage to your computer, including stealing your data or making your computer unusable.
8. Ransomware: Ransomware is a type of virus that locks you out of your computer and demands a ransom payment to unlock it. Ransomware can cause serious damage to your computer, including stealing your data or making your computer unusable.
9. Botnet: A botnet is a group of computers that have been infected with a virus and are controlled by a single person or organization. Botnets can be used to send spam or launch attacks against websites.
10. Scareware: Scareware is a type of virus that tricks you into buying a software product that is supposed to protect your computer from viruses. Scareware can cause serious damage to your computer, including stealing your data or making your computer unusable.
What is computer virus answer?
What is a computer virus?
A computer virus is a malicious program that is designed to spread from one computer to another and to harm the computer or the data it contains.
How does a computer virus spread?
A computer virus can spread in a number of ways. It can be spread through email attachments, through infected files downloaded from the internet, or by sharing files or disks with other users.
What are the consequences of a computer virus?
The consequences of a computer virus can be serious. The virus may damage or delete files on the computer, it may slow down the computer’s performance, or it may even render the computer unusable.
