17 What is a sparse infector? (Computer virus)
Description
This article is from the Computer Viruses FAQ, by Nick FitzGerald n.fitzgerald@csc.canterbury.ac.nz with numerous contributions by others.
17 What is a sparse infector? (Computer virus)
The term "sparse infector" is sometimes used to describe a virus that
infects only occasionally (e.g. every tenth program executed), or only
files whose lengths fall within a narrow range, etc. By infecting less
often, such viruses try to minimize the probability of being discovered.
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