what is a virus how is it harmful to our computer system
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Answer:
A computer virus is a malicious software program loaded onto a user's computer without the user's knowledge and performs malicious actions. ...
Viruses (and other malware) are harmful for many reasons such as: Monitor activity and steal sensitive data like credit card info, name, date of birth, social security numbers among other things. This can lead to identity theft which takes years to recover from. Damage files on your computer.
A computer virus is a type of computer program that, when executed, replicates itself by modifying other computer programs and inserting its own code. When this replication succeeds, the affected areas are then said to be "infected" with a computer virus
WHAT DOES COMPUTER VIRUS DO?
Some computer viruses are programmed to harm your computer by damaging programs, deleting files, or reformatting the hard drive. Others simply replicate themselves or flood a network with traffic, making it impossible to perform any internet activity. Even less harmful computer viruses can significantly disrupt your system’s performance, sapping computer memory and causing frequent computer crashes.