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hornus,
Thank you for the excellent explanation.
I like to explain heuristics this way:
If it walks like a duck, looks like a duck and quakes like a duck then it is a duck!
Heuristics takes this approach when examining files.
Heuristics tend to be effective with polymorphic viruses which tend to “change” their appearance to anti-virus software to avoid detection.
Using heuristics does require a bit more discipline before deleting files! False positives are an unfortunate side effect.
Hornus…thanks again.
techie