Adobe Acrobat 8 3D Bedienungsanleitung PDF herunterladen (Seite 251)

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Chapter 8: Security

Document security is similar to home security. Just as you lock your doors to prevent someone from entering your

house without permission, you use security features to lock an Adobe PDF. For example, you can use passwords to

restrict users from opening, printing, and editing PDFs. You can use a certificate to encrypt PDFs so that only an

approved list of users can open them. If you want to save security settings for later use, you can create a security

policy that stores security settings.

Note: To apply security features to PDFs, you need Adobe Acrobat 8 Professional, Acrobat 8 Standard, or Acrobat 3D

Version 8.

Quickstart

The following topics provide an overview of some common security tasks.

Check security restrictions

When you receive a PDF, it may contain restrictions preventing actions such as printing or copying information.

1 Click Security Settings or Signatures to the left of the document window. (The Security Settings button

only appears when the PDF contains security restrictions.)

2 View restriction information. In the Security Settings panel, you can click Permission Details to get more infor-

mation.

If you cannot open a PDF or are restricted from using certain features, contact the PDF author.

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