What is Computer Virus

 A computer virus is a type of
malware that is designed to infect a computer system and cause damage or steal
information. It is a malicious program that is written to spread from one
computer to another and can be transmitted through email attachments, infected
software or malicious websites. Once a computer is infected with a virus it
can spread to other computers and cause widespread damage.

Computer viruses can take many
forms and can have different effects on a computer system. Some viruses are
designed to steal personal information such as credit card numbers or
passwords while others are designed to cause damage to the system or to data
stored on the system. Some viruses are designed to be annoying or disruptive while others can be used to launch attacks on other computers or networks.

There are several different
types of computer viruses. A macro virus for example is a virus that is
embedded in a document and is triggered when the document is opened. A boot
sector virus on the other hand infects the boot sector of a hard drive and is
activated when the computer is started up. A file infector virus infects
executable files and is activated when the infected file is run.

Computer viruses can be
difficult to detect and remove and they can cause significant damage to a
computer system. Some viruses can delete files corrupt data or cause a system
to crash. Others can steal sensitive information or use a computer as part of a
larger botnet to launch attacks on other systems.

There are several steps that
can be taken to protect against computer viruses. One of the most important
steps is to keep antivirus software up to date and to scan the computer
regularly for viruses. It is also important to be careful when downloading and
opening email attachments as these can be a common source of viruses.
Additionally it is important to keep software and operating systems up to
date as vulnerabilities in these systems can be exploited by viruses.

In summary a computer virus
is a type of malware that is designed to infect a computer system and cause
damage or steal information. They can take many forms and can have different
effects on a computer system. Protecting against viruses requires a combination
of good security practices and the use of antivirus software.