What is computer virus and their types?

What is computer virus and their types?

In more technical terms, a computer virus is a type of malicious code or program written to alter the way a computer operates and is designed to spread from one computer to another. A virus operates by inserting or attaching itself to a legitimate program or document that supports macros in order to execute its code.

What is a virus write its types?

A virus is a fragment of code embedded in a legitimate program. Viruses are self-replicating and are designed to infect other programs. They can wreak havoc in a system by modifying or destroying files causing system crashes and program malfunctions.

Why are there different types of computer viruses?

Most systems catch viruses due to program bugs, the vulnerability of operating systems, and poor security practices. There are different types of computer viruses that can be categorized according to their origin, spreading capabilities, storage location, files they infect and destructive nature.

What are the symptoms of having a virus on your computer?

If a computer is infected with viruses, then there can be a variety of symptoms. Some common signs of computer virus attack are given below: • Frequent pop-up windows • Changes to your browser’s homepage

How does a direct action computer virus work?

When it comes to these types of viruses, direct action viruses infect your files and are one of the two main types of computer virus that does this. It doesn’t hide in your computer’s memory nor install itself. The way it works is through particular file types like EXE or COM, which they attach into.

How are viruses transmitted from one computer to another?

Computer viruses are pieces of malicious computer coding that can be spread from one device to another. Viruses can be transmitted through the internet, removable media such as flash drives, or even via email. Each virus does something slightly different. The boot sector takes over a computer upon start-up.