Scan Items tab

• All highlighted items — Scan selected email messages and folders.
• All messages in the Inbox folder — Scan all messages currently in the Inbox folder and its subfolders.
  
  • Scan unread messages only — Scan all unread messages currently in the Inbox folder and its subfolders.

• All file types — Scan all types of files, regardless of extension.
• Default + additional file types — Scan the default list of extensions plus any additions you specify. The default list is defined by the current DAT file. Select Default + additional file types, then enter file extensions separated by spaces in the text box.

  Also scan for macros in all attachments— If you selected Default + additional file types, you can also search for known macro threats in all files.

• Specified file types — Create a list of user-specified extensions to be scanned. You can also remove any extensions you added previously.

  Select Specified file types, then enter file extensions separated by spaces in the text box.

• Find unknown program threats and trojans — Use heuristic scanning to detect executable files that have code resembling malware.
• Find unknown macro threats — Use heuristic scanning to detect unknown macro viruses.
• Find attachments with multiple extensions — Treat attachments with multiple extensions as a threat.

  When you select this option, an Email Scan Warning dialog box appears. Click OK to confirm your selection.

• Scan inside archives — Examine archive (compressed) files and their contents.

  Although it provides better protection, scanning compressed files can increase the time required to perform a scan.

• Decode MIME encoded files — Detect, decode, and scan Multipurpose Internet Mail Extensions (MIME) encoded files.

See Restricting Potentially Unwanted Programs for more information.