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Defining the types of objects to be scanned |
When specifying the types of objects to be scanned, you establish what file formats, sizes, and what drives will be scanned for viruses this task runs.
The types of file to be scanned is defined in the File types section. Select one of the three options:
All. With this option, all objects will be scanned without exception.
Programs and documents (by contents). If you select this group of programs, only potentially infected files will be scanned.
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Note
There are files in which viruses cannot insert themselves, because the code of these files does not contain any "snags" for the virus. An example of such a file would be .txt format files.
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Before searching for viruses in an object, its internal header is analyzed for the file format (txt, doc, exe, etc.).
Programs and documents (by extension). In this case, the program will only scan potentially infected files, and in doing so, the file format will be determined by extension. Using the extension link, you can review a list of file extensions that are scanned in this case.
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Tip:
Do not forget that someone could send a virus to your computer with the extension .txt, although in reality it could be an executable file renamed as a .txt file. If you select the Scan Programs and documents (by extension) option, such a file would be skipped by the scan. If the Scan Programs and documents (by contents) is selected, ignoring extensions, the program will analyze file headers, which will uncover that the file is an .exe file. Such a file would be thoroughly scanned for viruses.
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In the
Productivity section, you can specify that only new files and those that have been modified since the previous scan or new files should be scanned for viruses. This mode of operation noticeably cuts down on scan time and increases the program's performance speed. To do so, you must check
Scan new and changed files only . This mode extends to simple and compound files.
You can also set time limits for scanning individual objects in the
Productivity section. To do so, check
Skip if the scan takes longer than ... seconds and enter the maximum scan time for an object. Then, if this time is exceeded, this object will be removed from the scan queue.
In the Compound files section, specify which compound files must be analyzed for viruses:
Scan all/only new archives รป scan .rar, .arj, .zip, .cab, .lha, .jar, and .ice archives.
Scan all/only new embedded OLE objects - scan objects imbedded in files (for example, Excel spreadsheets or a macro imbedded in a Microsoft Word file, e-mail attachments, etc.).
For each type of compound file, you can select and scan all files or only new ones. To do so, use the link next to the name of the object. It changes its value when you left-click it. If the Productivity section has been set up only to scan new and changed files, you will not be able to select the type of compound files to be scanned.
Parse e-mail formats - scan e-mail format files and e-mail databases. If this box is unchecked, the program will not scan e-mail formats, and the report will display information on the object with an
ok status.
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Please note these points of scanning password-protected e-mail databases:
- Active Virus Shield detects malicious code in Microsoft
Office Outlook 2000 databases but does not treat them;
- the program does not support scans for malicious code in Microsoft
Office Outlook 2003 protected databases.
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Scan password-protected archives - scans password protected archives. With this feature, a window will request a password before scanned archived objects. If this box is not checked, password-protected archives will be skipped.
Also see: