Different types of computer viruses wikipedia

We have discussed 10 symptoms of computer viruses which may spread in different ways. If you know the symptoms and how they spread then you can easily protect your computer from viruses. However, the computer virus can be spread different ways such as:.

Learn more about how computer virus spread? Learn more about Prevention of Computer Virus Attack. Finally, computer virus infect a vulnerable systems, access admin control and steal sensitive information of your organization. You should know the symptoms of computer virus in order to protect from virus.

We have mentioned most common 10 symptoms of computer viruses. Hope the article will be helpful for you! Your email address will not be published. Save my name, email, and website in this browser for the next time I comment.

What is Sophos Firewall What is the Meaning of E Different Types of Datab Last Updated on 7 months by Touhid Computer virus is a type of malware that harm to your computer system such as deleting files, encrypt files, files turned into shortcuts, formatting hard drive and replicate themselves or flood a network traffic.

Table of Contents. No Comments Mar 17, No Comments Jul 13, The infected file is used only as the initial point for file infector virus which can further re-write the file itself. These types of viruses can slow down the performance of programs and cause many other damages. Web Scripting Virus Web scripting viruses are attached to certain links, ads, images, videos, and the layout of a website.

These viruses carry malicious codes that get activated when you click on an infected source. The virus may automatically download unwanted files on your computer or may redirect you to malicious websites. Browser Hijacker These types of viruses usually infect the web browser of the computer. They 'hijacks' certain functions of the browser and handle them accordingly.

Typically, the homepage of your browser may change to a particular site. Or if you enter any specific domain address in the URL address bar, the browser hijacker will redirect you to multiple fake websites that may harm your computer. These types are viruses are generally used to earn revenue from web ads. Once the virus gets access to the address book, it starts sending spam or fake e-mails to the addresses saved in the address book of the particular e-mail program.

Encrypted Virus Encrypted viruses are written and encrypted with malicious codes which make it tough for anti-viruses to detect them. These viruses can only be detected when they decrypt themselves during replication.

However, they can drastically reduce the performance of the computer system. Companion Virus Companion viruses cannot live without joining an existing file or folder. To cause damage, the file or folder associated with the companion virus must be opened or run. The most popular examples of companion viruses are Terrax. The virus may further replicate through shared resources such as drives and folders.

Also Check : Types of Computer Networks Multiple Characteristic Viruses Apart from the above-mentioned viruses, there are some other viruses with different characteristics and different capabilities. They are not technically considered viruses, but they act like viruses and can cause the same damage.

This includes malware, worm, spyware, adware, Trojan, and ransomware. Summary Depending on the type of computer virus, they can perform various types of actions. Some viruses are not so harmful, but some are. To protect your computer from viruses, install an anti-virus program and keep it up-to-date. There are several free anti-virus, but, it is recommended to always use good quality premium anti-virus software on your computer. Types of Computer Viruses.

A computer is an electronic device that can be seen in any organization, whether it is large or small. Let's start with the definition of a computer virus:. A computer virus can spread through internet downloads, e-mail attachments, the infected removable disk, social media scam links, etc.

Some common signs of computer virus attack are given below:. We have explained all the types of computer viruses that can affect your computer. Check out the computer viruses list below:. The boot sector virus came into existence when the floppy disk was the primary source of booting the computer. File deleting viruses are designed in such a way that they can automatically delete files on your computer system.

Directory viruses change the paths for the files. Direct action viruses attack on a particular type of file, typically. Unlike direct action viruses, resident viruses install themselves directing into the primary memory of your system.

Most of the viruses are spread via one method or deliver a single payload. Macro viruses are designed using the same macro programming languages used for MS office package or other macro-based software applications. Polymorphic viruses are very difficult to detect or remove. Retroviruses are different types of viruses.

Tunneling viruses attempt to bypass the detection of anti-virus software by installing themselves in the interrupt handler chain. As the name speaks, the armored viruses are very difficult to detect as they are armored. Stealth viruses are so smart that they try to trick anti-virus programs by appearing like they are necessary files or programs of the operating system. Nonresident viruses are spread through the module. Sparse infector viruses use special techniques to reduce the chances of their detection.

Overwrite viruses can infect the content of a file. As its name suggests, the spacefiller viruses fill empty spaces between the codes without damaging the code or increasing its size. File infector virus is very common amongst computer viruses.

Just like how humans catch a cold or flu, it can remain dormant inside the system and gets activated when you least expect it. A computer virus is developed to spread from one host to another and there are numerous ways on how your computer catches it. It can be through email attachments, file downloads, software installations, or unsecured links. These viruses can steal your data such as passwords, hacked into your social media accounts or online banking accounts, and even wiped out all your data.

Cybercriminals are getting better and better at stealing our confidential data and viruses that are being created are evolving rapidly. There are millions of viruses around the world, but here are some common types you should be aware of:. A virus that attached itself to an executable program. It is also called a parasitic virus which typically infects files with.

This type of virus is commonly found in programs such as Microsoft Word or Excel. These viruses are usually stored as part of a document and can spread when the files are transmitted to other computers, often through email attachments.

This virus targets and alters your browser setting. This virus can pose other threats such as changing the default home page of your browser. A very sneaky virus that targets popular websites. What this virus does is overwrite code on a website and insert links that can install malicious software on your device.