If I scan a zipped file for viruses and none are found, do I need to scan again after I unzip the files?

Question

i.e. should I scan each of the files after they have all been extracted from an archive?

Answer 1

Depending on your antivirus, most can be configured to scan within zipped archives, thus there is no need to extract them and rescan them. Check your antivirus manual.

Answer 2

Hi L T,

Yes I would. It's a good idea to do so in any case, whether the program came from friends or not.
You never know what someone else has or has been infected with.
Most anti-virus' will scan inside archived files anyways.

Answer 3

No, virus software scans the contents of all files and folders, weather they are zipped or not.
Don