11/30/2022 0 Comments What is a worm virus on a computerApart from that many viruses are bug-ridden, and these bugs may lead to system crashes and data loss. As a result, it causes erratic behavior and can result in system crashes. Viruses use computer memory used by legitimate programs. After that, it might corrupt or delete data on the computer, use e-mail program to spread itself to other computers, or even erase everything on the hard disk. After the user, downloads the attachment, the virus gets installed in the users computer. This may include the users' password etc.Ī virus needs a host program, for example, a forwarded mail, through which it comes as an attachment. It may delete some system files it may send junk mails to the user, it may install other adware or spyware, through which the author is able to know important information about the user. When a worm gets installed, it opens a back door into the computer, adds the infected machine to a botnet and installs codes to hide itself. This way, a worm can expand from a single copy to many at a very fast rate. Worms normally move via the network and infect other machines through the computer's that are connected in the network. The worm is code that replicate itself in order to consume resources to bring it down. The virus is the program code that attaches itself to application program and when application program run it runs along with it. E.g.The code red worm affected 3 lack PCs in just 14 Hrs. Worms usually only monopolize the CPU and memory. Sometimes a virus also changes the location of files. It can use a network to replicate itself to other computer systems without user intervention. It has to rely on users transferring infected files/programs to other computer systems. It exploits a weakness in an application or operating system by replicating itself. It inserts itself into a file or executable program. Comparison chart Computer Virus versus Computer Worm comparison chart
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