Settings of BitDefender scanner engine
You can set advanced options of the scanning engine here:
Archive depth level - Specifies if archive files will be scanned with/without depth limit (e.g. nested .zip files inside another .zip file).
Scan packed files - When this option is enabled then packed files are scanned. In this case the packed file means an archive file created using no compression ("store" method) like .zip files or the executable files that were packed by run-time packers (UPX, Aspack, etc.).
Scan mail databases - Specifies if e-mail databases should be scanned for a virus infection or not.
Update servers setting