write a short note on "computer virus evolution".write atleast in 100 words....
who will answer this question I will thank them and I will mark them as a brain list.
Answers
Answer:
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.
Computer viruses cause billions of dollars' worth of economic damage each year,
In 1989 The ADAPSO Software Industry Division published Dealing With Electronic Vandalism, in which they followed the risk of data loss by "the added risk of losing customer confidence."
In response, free, open-source antivirus tools have been developed, and an industry of antivirus software has cropped up, selling or freely distributing virus protection to users of various operating systems.
Answer:
A computer virus, much like a flu virus, is designed to spread from host to host and has the ability to replicate itself. Similarly, in the same way that flu viruses cannot reproduce without a host cell, computer viruses cannot reproduce and spread without programming such as a file or document.
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. In the process, a virus has the potential to cause unexpected or damaging effects, such as harming the system software by corrupting or destroying data.
How does a computer virus attack?
Once a virus has successfully attached to a program, file, or document, the virus will lie dormant until circumstances cause the computer or device to execute its code. In order for a virus to infect your computer, you have to run the infected program, which in turn causes the virus code to be executed.
This means that a virus can remain dormant on your computer, without showing major signs or symptoms. However, once the virus infects your computer, the virus can infect other computers on the same network. Stealing passwords or data, logging keystrokes, corrupting files, spamming your email contacts, and even taking over your machine are just some of the devastating and irritating things a virus can do.