If I put the wildcard .??-? (ignore the dash) will Avast scan all files on open? I would like to know what the resident scanner
is actually scanning “on open.”
Well, “all disks” - yes (in the sense that it doesn’t matter where the file is located).
“All files” - certainly no.
There are not so many files that are scanned on-open by default (but rather “on execute”, as set on the first page of Standard Shield configuration; so, if you simply copy the file, it won’t be scanned/detected).
As far as I know, JPEG files are scanned on open (and also OLE files - such as DOC, XLS, etc. - but for them, it’s considered as “on execute”).