what is a computer virus ?how can it affect your computer?
Answers
Answer:
A computer virus is a software program designed to replicate itself and spread to other machines. In most cases, the program is "malicious," meaning its purpose is to cause the computer malfunction in some way.
In general usage, the term "computer virus" includes all forms of "malware," or malicious software.
Instead of sniffles and a fever, some common symptoms of a computer viral infection are slow performance, data loss and system crashes, all of which can make people using the machine feel ill as well.
Yet many technological diseases were designed to remain hidden on a computer and not alert its user, so malware-infected machines may spread silently.
Since Elk Cloner, the first computer virus, left its lab in 1981, millions more have been created by human programmers who have decided to sabotage others' computers.
"There is always something new," said Peter Szor, an independent researcher and former engineer at Symantec Corporation, a maker of antivirus software and author of The Art of Computer Virus Research and Defense (Addison-Wesley, 2005). Symantec and other virus labs often see more than 30,000 unique malware programs on a single day, Szor added.
The sinister programs often work by associating themselves with a legitimate program that when activated also "executes," or runs, the virus' code.
Answer:
A computer virus is a software program designed to replicate itself and spread to other machines. In most cases, the program is "malicious," meaning its purpose is to cause the computer malfunction in some way. In general usage, the term "computer virus" includes all forms of "malware," or malicious software