Once it affects the system, it creates a pop-up message, like catch me if you can. Elk Cloner is a boot virus that attacked the Apple system and leaves a poem which is the hacker writes3. The email is disguised as a love letter to anyone in the contact book, and if the user prompts to open it, the virus gets injected into their system. This is popular, which affected fifty million systems in just nine days. The Code red virus attacked Microsoft servers and caused many server related issues as it degraded all the information technology system.
Ninda is a window virus that is injected through multiple methods. It is spread via emails, web browsers, attachments, and different means of portable devices. Slammer is an extremely rapid-spreading virus affecting billions of systems in a fraction of a second. TheA single bit code that corrupts the entire programlaster is a type of virus which occurs when there is a program error, but the user receives lots of worthless media with a quote, Bill gates Stop Making money.
Welchia is a virus that affects the computer, then deletes itself. Commwarrior is an advanced form of virus which attacked smartphones through text messages. It is a new variety of viruses in the beginning stage, so the security is made firm to prevent the user data. The user has to safeguard his device with a strong firewall and antivirus software to prevent the system from any virus attack.
The user should cross-check twice before installing a program, clicking on spam emails, downloading a suspicious file, inserting any hard disk to the system.
This is a guide to Types of Computer Virus. You can also go through our suggested articles to learn more —. Submit Next Question. By signing up, you agree to our Terms of Use and Privacy Policy. Forgot Password? This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy.
By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to our Privacy Policy. Popular Course in this category. Course Price View Course. On a positive note, the virus does not typically delete files nor hinder your system's performance. Aside from some files becoming inaccessible, it has a minimal impact on a user and can be easily removed with an anti-virus program.
Resident viruses are the other primary type of file infectors. Unlike direct action viruses, they install themselves on a computer. It allows them to work even when the original source of the infection has been eradicated. As such, experts consider them to be more dangerous than their direct action cousin.
Depending on the programming of the virus, they can be tricky to spot and even trickier to remove. You can split resident viruses into two areas; fast infectors and slow infectors. Fast infectors cause as much damage as quickly as possible and are thus easier to spot; slow infectors are harder to recognize because their symptoms develop slowly. In a worst-case scenario, they can even attach themselves to your anti-virus software, infecting every file the software scans.
You often need a unique toolsuch as an operating system patchfor their total removal. An anti-malware app will not be enough to protect you. While some viruses are happy to spread via one method or deliver a single payload, multipartite viruses want it all.
A virus of this type may spread in multiple ways, and it may take different actions on an infected computer depending on variables, such as the operating system installed or the existence of certain files. They can simultaneously infect both the boot sector and executable files, allowing them to act quickly and spread rapidly. The two-pronged attack makes them tough to remove. Even if you clean a machine's program files, if the virus remains in the boot sector, it will immediately reproduce once you turn on the computer again.
It claims anti-virus firms need to "spend days or months creating the detection routines needed to catch a single polymorphic". But why are they so hard to protect against? The clue is in the name.
Anti-virus software can only blacklist one variant of a virusbut a polymorphic virus changes its signature binary pattern every time it replicates. Common Types Of Computer Viruses 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: 1.
File-infecting Virus A virus that attached itself to an executable program. Browser Hijacker This virus targets and alters your browser setting. Web Scripting Virus A very sneaky virus that targets popular websites. Boot Sector Virus These viruses are once common back when computers are booted from floppy disks. Polymorphic Virus This virus has the capability to evade anti-virus programs since it can change codes every time an infected file is performed.
Multipartite Virus A type of virus that is very infectious and can easily spread on your computer system. Protection Against These Types Computer Viruses A virus left untreated can wreak havoc on your device but if detected early, and appropriate measures are done, then the recovery would be quick.
Avoid clicking on suspicious links. Scan email attachments before opening it. Avoid clicking on pop-up advertisements and get a pop-up blocker for your web browser. Install a reliable anti-virus program and always keep it up to date. Get Help from IT Experts!
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