There are many definitions of computer viruses, but they all have the same basic concept. A virus is a program or code that is designed to spread from one computer to another and to do harm. Viruses can damage or delete files, make computers slow down or crash, or even steal personal information.
There are many different types of computer viruses, and they can be very sophisticated. Some viruses are even designed to evade detection by anti-virus software. It is important to keep your computer protected with up-to-date anti-virus software, and to be very careful about what files you open and what websites you visit.
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What is the definition of virus in computer science?
A virus is a type of malware that can replicate itself and spread to other computers. It is typically disguised as a legitimate program or attachment, and can be very difficult to detect. Once a virus has infected a computer, it can cause a range of problems, including data loss, system crashes, and identity theft.
There are many different types of viruses, and they can be spread in a variety of ways. Some viruses are spread through email attachments, while others are hidden in pirated software or malicious websites. In some cases, a user may even be tricked into installing a virus on their computer.
It is important to have a good antivirus program installed on your computer to help protect you from viruses. Antivirus programs can detect and remove viruses, and can also help to protect your computer from future infections.
What is computer virus and examples?
What is a computer virus?
A computer virus is a type of malware that is designed to spread from one computer to another and can cause a range of problems, from data loss to system crashes.
How do computer viruses spread?
Computer viruses can spread in a number of ways, including through email attachments, infected files shared on peer-to-peer networks, and software vulnerabilities.
What are the symptoms of a computer virus?
The symptoms of a computer virus can vary, but common signs include system slowdowns, unexpected pop-ups, and file corruption.
How can I protect my computer from viruses?
There are a number of things you can do to protect your computer from viruses, including installing antivirus software, keeping your software up to date, and exercising caution when opening email attachments and clicking on links.
What are the 4 types of computer viruses?
There are four types of computer viruses that can cause significant damage to your computer. These viruses are:
1. File infectors: File infectors are the most common type of virus. They infect executable files, which means that they can spread quickly to other computers. They can also damage your computer’s files and make it difficult to use your computer.
2. Macro viruses: Macro viruses are viruses that infect Microsoft Word documents and spread through email. They can damage your computer’s files and make it difficult to open documents.
3. Worms: Worms are viruses that spread through email and network connections. They can damage your computer’s files and make it difficult to use your computer or the internet.
4. Trojan horses: Trojan horses are viruses that masquerade as harmless files or programs. They can damage your computer’s files and make it difficult to use your computer.
Who define the term computer virus?
The term “computer virus” was first coined in academic circles in the early 1980s. However, the first known computer virus was created in 1971 by two students at the University of California, Los Angeles (UCLA). The students, who were working on a program that would allow users to type in Chinese characters, created a code that would replicate itself and attach itself to other programs.
While computer viruses have been around for over four decades, it wasn’t until the late 1980s and early 1990s that they began to cause widespread damage. In 1989, a computer virus known as the “Internet Worm” infected tens of thousands of computers across the globe. The worm was designed to exploit a security flaw in the Unix operating system, and it caused millions of dollars in damage.
In the early 1990s, a computer virus known as the “Michelangelo” virus caused millions of dollars in damage to businesses around the world. The Michelangelo virus was programmed to activate on March 6th (the artist’s birthday) and delete all the files on the infected computer.
Today, computer viruses are a major threat to businesses and individuals around the world. In 2016, a computer virus known as the “WannaCry” ransomware infected hundreds of thousands of computers in over 150 countries. The WannaCry ransomware encrypted the victim’s files and demanded a ransom payment in order to unlock them.
What are the 3 types of viruses?
There are three types of viruses: lytic, lysogenic, and temperate.
Lytic viruses are the most deadly type of virus. They infect a cell, replicate inside of it, and then burst out of the cell, killing it in the process.
Lysogenic viruses are less deadly than lytic viruses. They infect a cell and integrate their DNA into the host cell’s DNA. The virus remains inactive until it is activated, at which point it replicates and bursts out of the cell.
Temperate viruses are the least deadly type of virus. They also infect a cell and integrate their DNA into the host cell’s DNA. However, the virus remains inactive and does not replicate until it is activated.
What are the types of viruses?
There are many different types of viruses, and the term can be used to describe a wide variety of different infectious agents. In general, viruses are small, simple, and often quite fragile. They are unable to replicate or survive outside of a host cell, and must hijack the cellular machinery of a living organism in order to reproduce.
There are many different types of viruses, classified by their shape, structure, and the type of cells they infect. Some of the most common types of viruses include:
-Bacteriophages: These viruses attack bacteria, and are the most common type of virus.
-Herpesviruses: These viruses cause herpes, a common sexually-transmitted infection.
-Picornaviruses: These viruses include the common cold and polio.
-Retroviruses: These viruses are responsible for causing AIDS and other deadly diseases.
-Human immunodeficiency virus (HIV): The most deadly type of virus, HIV attacks the immune system, making the victim susceptible to other infections and illnesses.
What are 7 types of computer virus?
A computer virus is a type of malware that, once it has infected a computer, can replicate itself and spread to other computers. There are many different types of computer viruses, and they can have a variety of effects on infected computers.
The most common types of computer viruses are file infectors, script viruses, macro viruses, polymorphic viruses, time bombs, Trojan horses, and rootkits.
File infectors are viruses that infect executable files and copy themselves to other executable files when they are run. This can cause the virus to spread quickly, and it can be difficult to track down and remove the virus.
Script viruses are viruses that are written in a scripting language, such as Visual Basic Script (VBS) or JavaScript. They are often used to spread through email messages, and they can be very difficult to detect.
Macro viruses are viruses that are written in a macro language, such as Microsoft Word macros or Excel macros. They are often used to spread through email messages, and they can be very difficult to detect.
Polymorphic viruses are viruses that can change their appearance each time they replicate, making them more difficult to detect.
Time bombs are viruses that are set to go off at a certain time or when a certain event occurs. They are often used to damage or destroy data on infected computers.
Trojan horses are viruses that masquerade as legitimate software programs. When users install the Trojan horse, the virus will infect their computer.
Rootkits are viruses that disguise themselves as part of the operating system. They can be used to hide other malware on infected computers, and they can be very difficult to detect and remove.
There are many other types of computer viruses, and these are just some of the most common ones. It is important to be aware of these viruses and to take steps to protect your computer from them.
