McAfee AVDCDE-BA-CA User Guide - Page 120
Enable heuristics scanning, Enable program file heuristics scanning.
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Using the VShield Scanner 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 E-Mail Scan module looks simultaneously for file characteristics that rule out the possibility of virus infection, 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. The E-Mail Scan module starts out without any heuristic scan options 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 the types of heuristics scanning you want theE-Mail Scan module to use. Your choices are: - Enable macro heuristics scanning. Choose this option to have the E-Mail Scan module identify all Microsoft Word, Microsoft Excel, and other Microsoft Office files that contain embedded macros, then compare the macro code to its virus definitions database. The module will identify exact matches with the virus name; code signatures that resemble existing viruses cause the module to tell you it has found a potential macro virus. - Enable program file heuristics scanning. Choose this option to have the E-Mail Scan module locate new viruses in program files by examining file characteristics and comparing them against a list of known virus characteristics. The module will identify files with a sufficient number of these characteristics as potential viruses. - Enable macro and program file heuristics scanning. Choose this option to have the module use both types of heuristics scanning. McAfee recommends that you use this option for complete anti-virus protection. NOTE: The module will use heuristic scanning techniques only on the file types you designate in the Program File Extensions dialog box. If you choose to scan All files, the module will use heuristic scanning for all file types. 120 McAfee VirusScan Anti-Virus Software