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Friday, 5 August 2011

Why Is It That Anti-Virus Software Cannot Repair Files That Are Infected By A Trojan Or A Worm?


Strictly speaking, there is no
such thing as “file infected by a
Trojan or a worm”. One
difference between a virus and a
Trojan or a worm is that a virus
will replicate itself to a clean file, which will in turn infect other
clean files when the infected file
is executed or opened.

A Trojan is a malicious program
installed on an infected computer
which does not attach itself to any file. Worms are also malicious
software that spread across
networks but do not replicate
onto a clean file. Therefore,
there is no file to repair when it
comes to a Trojan or a worm.

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