What is Computer Virus? Computer virus protection

What is a Computer Virus?

A computer virus is a piece of code that is embedded in a legitimate system and is created by the ability to duplicate itself by infecting other programs on a computer. Like how people catch a cold or flu, you can always sleep inside the system and work when you least expect it.

Protection Against Computer Viruses

A computer virus is transmitted from one administrator to another and there are many ways for your computer to catch it. It can be through email attachments, file downloads, software installations, or unsafe links.

These viruses can steal your data such as passwords, log in to your social networking account or online banking accounts, and even erase all your data.

Common Types Of Computer Viruses

Cyber criminals are getting better and better at stealing our private data and viruses being made start faster. There are millions of viruses worldwide, but here are some common types you should know:

1. File-infecting Virus

Virus attached to the operating system. It is also known as a viral virus that infects files commonly with extensions .exe or .com extensions. Some intruders can override hosting files while others may damage the formatting of your hard drive.

2. Macro Virus

These viruses are usually stored as part of a document and can be spread when files are transferred to other computers, usually via email attachment.

3. Browser hijacker

This virus identifies and modifies your browser settings. It is commonly referred to as a browser redirect virus because it redirects your browser to other malicious websites that you have no intention of visiting. This virus can pose other threats such as changing your browser's default homepage.

4. Web Scripting Virus

A creepy virus targeting popular websites. What this virus does is rewrite the code on the website and install links that could install malicious software on your device. Web browsers may steal your cookies and use the information to send you your name to an infected website.

5. The boot sector virus

These viruses once came back when computers were booted on floppy disks. Today, these viruses are found and transmitted through physical means such as external hard drives or USB. When a computer is infected with a boot sector virus, it automatically uploads it to memory that allows control of your computer.

6. Polymorphic virus

This virus has the ability to avoid anti-virus programs because it can change the code every time a virus file is installed.

7. Resident Virus

The resident virus stores itself in your computer's memory which allows it to infect files on your computer. This virus can disrupt your application which led to file and system corruption.

8. Multipartite Virus

The most common and most contagious type of virus on your computer system. It can infect many parts of the system including memory, files, and boot sector making it difficult to contain.

Protection Against These Types Computer Viruses

A virus left untreated can cause damage to your device but if detected early, and appropriate steps are taken, recovery will speed up. As with how we protect ourselves from getting infected, here are a few notes to keep in mind to help keep your devices safe.
  • Avoid clicking on suspicious links.
  • Scan the email attachment before opening it.
  • Avoid clicking on pop-up ads and get a pop-up blocker for your web browser.
  • If you are redirected to another website, do nothing, and leave the site immediately.
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