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Logout| Parameter | Virus | Worm |
|---|---|---|
| How they infect a computer? | It inserts malicious code into a specific file or program. | Generate it’s copy and spread using email client. |
| Dependency | Virus need a host program to work | They do not require any host to function correctly. |
| Linked with files | It is linked with .com, .xls, .exe, .doc, etc. | It is linked with any file on a network. |
| Affecting speed | It is slower than worm. | It faster compared to a virus. |