McAfee AVDCDE-AA-AA User Guide - Page 119

Using the VShield Scanner • Choose file types for scanning. Viruses cannot infect files that contain no executable code, whether script, macro, or binary code. You can, therefore, safely narrow the scope of your scan sessions so that the module examines only those files most susceptible to virus infection.To do so, select the Program files only button. To see or designate the file name extensions that the E-Mail Scan module will examine, click Extensions to open the Program File Extensions dialog box (Figure 4-10). Figure 4-20. Program File Extensions dialog box See "Adding file name extensions for scanning" on page 287 and "Current list of vulnerable file name extensions" on page 288 to learn which file name extensions this module scans by default and how to add to or change this list. • Scan all files. Select the All files button to have the E-Mail Scan module examine any file, whatever its extension, whenever you or a system process modifies it in any way. 5. Turn on heuristic scanning. Click Advanced to open the Advanced Scan Settings dialog box (Figure 4-11). Figure 4-21. Advanced Scan Settings dialog box Heuristic scanning technology enables the E-Mail Scan module to recognize new viruses based on their resemblance to similar viruses that the module already knows. User's Guide 119