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Difference between worm and virus

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Difference between worm and virus

Posted by Akash Kumar 4 years, 3 months ago

CBSE > Class 10 > Computer Applications (165)

1 answers

Sia ? 4 years, 3 months ago

Computer Virus	Computer Worm
A computer virus is a program, wherein a code copies itself and replicates itself to other programs/files on a device and may result in corrupting or damaging the device	A computer worm is an independent malicious program, which when enters a system can start causing harm/damage to the device
An initiation is required by the host, i.e., a virus spreads only when an infected program is executed in a device	A worm only needs to enter the device, then it can automatically affect the other files and programs. No execution is needed
Few different types of computer viruses include: Boot sector virus Direct Action virus Polymorphic virus Macro virus Spacefiller virus Overwrite virus File Infector virus	Few of the different types of computer worms are as follows: Internet worms Instant messaging worms Email worms File sharing worms Internet relay chat (IRC) worms
A virus may spread when a file is open and then the same malicious code is copied and spread around whenever other files are opened in the host computer	A worm only requires a medium to enter the device. This may be through the internet, email, online messaging applications, etc.
Time taken by a virus to spread in the system is lesser in comparison to a worm	A worm can quickly spread through a device
A virus corrupts the files or deletes them automatically	On the other hand, a worm also affects the bandwidth and network connections of the device
Examples of computer virus include Creeper, Blaster, Slammer, etc.	Examples of computer worm include Morris worm, storm worm, etc.

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