User Guide

Using the WinGuard Scanner
144 Dr Solomon’sAnti-Virus
This option ensures that viruses do not spread from compressed
files,butbecausethemoduleuncompressesthesefilesbeforeit
scans them, choosing this option can lengthen the time it takes to
scan a given set of files as you work with your computer.
 NOTE: When the Download Scan module examines a file
archive, it will scan only the file archive itself, not the
compressed files within the archive. To learn which files and
archivesthemodulescans,see“Currentlistofcompressedfiles
scanned” on page 318.
3. Turn onheuristic scanning. Click Advanced to open theAdvancedScan
Settings dialog box (Figure 4-11).
Figure 4-27. Advanced Scan Settings dialog box
Heuristic scanning technology enables the Download Scan module to
recognize new virusesbased on theirresemblance to similarviruses that
the module already knows. To do this, the module looks for certain
“virus-like” characteristics in the files you’ve asked it to scan. The
presence of a sufficient number of these characteristics in a file leads the
module to identify the file as potentially infected with a new or
previously unidentified virus.
Because the Download Scan module looks simultaneously for file
characteristicsthatruleoutthepossibilityof virusinfection, it will rarely
give you a false indication of a virus infection. Therefore, unless you
know that the file does not contain a virus, you should treat “potential”
infections with the same caution you would confirmed infections.
TheDownloadScanmodulestartsoutwithoutanyheuristicscanoptions
active. To activate heuristics scanning, follow these substeps:
a. Select the Enable heuristics scanning checkbox. The remaining
options in the dialog box activate.
b. Select thetypesofheuristicsscanning you wantthe DownloadScan
module to use. Your choices are: