Adobe 22002486 Digital Signature User Guide - Page 141
Working with Attachments
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Acrobat 9 Family of Products Security Feature User Guide Figure 100 Automatic updates External Content and Document Security Working with Attachments 141 9.5 Working with Attachments Before attempting to modify the application's default behavior, you should understand the default behavior. For details, see the following: "Default Behavior: Black and White Lists" on page 141 "Adding Files to the Black and White Lists" on page 144 "Resetting the Black and White Lists" on page 144 "Allowing Attachments to Launch Applications" on page 145 9.5.1 Default Behavior: Black and White Lists Black Lists and White Lists Black Lists and White Lists The Acrobat family of products always allow you to open and save PDF and FDF file attachments. However, (Table 4)File types on the white list: These can be attached and may be opened or saved if the file extension is associated with the requisite program. File types on the black list: These can be attached, but a warning dialog appears stating that they cannot be saved or opened from the application. No actions are available for these files. File types not on any list: These can be attached without a warning dialog. Trying to open or save them invokes a dialog which allows the user to perform the action just once or to add them to the good type (white) list or bad type (black) list. Why Attach a File that's on the Black List? Table 4 Default prohibited file types Extension Description .ade Access Project Extension (Microsoft) .adp Access Project (Microsoft) .app Executable Application .asp Active Server Page .bas BASIC Source Code .bat Batch Processing .bz Bzip UNIX Compressed file .bz2 Bzip 2 UNIX Compressed file (replaces BZ)