C8) Why does my anti-viral scanner report an infection only sometimes?

There are circumstances where part of a virus exists in RAM without
being active:  If your scanner reports a virus in memory only
occasionally, it could be due to the operating system buffering disk
reads, keeping disk contents that include a virus in memory
(harmlessly), in which case it should also find it on disk.  Or after
running another scanner, there may be scan strings left (again
harmlessly) in memory.  This is sometimes called a "ghost positive"
alert.


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