McAfee AVDCDE-BA-CA User Guide - Page 212
Enable macro heuristics scanning, Enable macro and program file heuristics scanning.
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Creating and Configuring Scheduled Tasks Heuristic scanning technology enables the VirusScan application to recognize new viruses based on their resemblance to similar viruses that the module already knows. To do this, the application 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 application to identify the file as potentially infected with a new or previously unidentified virus. Because the application 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 VirusScan application starts out without any heuristic scan options active. To activate heuristic 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 the VirusScan application to use. Your choices are: - Enable macro heuristics scanning. Choose this option to have the application 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 application will identify exact matches with the virus name; code signatures that resemble existing viruses cause it to tell you it has found a potential macro virus. - Enable program file heuristics scanning. Choose this option to have the VirusScan application locate new viruses in program files by examining file characteristics and comparing them against a list of known virus characteristics. The application 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 application use both types of heuristics scanning. McAfee recommends that you use this option for complete anti-virus protection. NOTE: The application 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, it will use heuristic scanning for all file types. c. Click OK to save your settings and return to the VirusScan Properties dialog box. 212 McAfee VirusScan Anti-Virus Software