Adobe Acrobat XI User Manual download pdf (Page 359)

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Last updated 1/14/2015

Chapter 9: Security

Enhanced security setting for PDFs

PDFs have evolved from static pages to complex documents with features such as interactive forms, multimedia

content, scripting, and other capabilities. These features leave PDFs vulnerable to malicious scripts or actions that can

damage your computer or steal data. Enhanced security lets you protect your computer against these threats by

blocking or selectively permitting actions for trusted locations and files.

When enhanced security is enabled and a PDF tries to complete a restricted action from an untrusted location or file,

a security warning appears. The type of warning depends on the action and your version of Acrobat or Reader. (See

Security warnings .)

For technical details about enhanced security, primarily for administrators, see the documents at

www.adobe.com/go/learn_acr_appsecurity_en.

Note: For a full list of articles about security, see Overview of security in Acrobat and PDF content.

Enable enhanced security

Acrobat and Reader X, 9.3, and 8.2 enable enhanced security by default. Adobe recommends that you enable enhanced

security if it is not already enabled, and that you bypass restrictions only for trusted content.

1 Choose Preferences.

2 From the Categories on the left, select Security (Enhanced).

3 Select the Enable Enhanced Security option.

4 (Optional—Windows only) Select Cross Domain Log File for troubleshooting problems if your workflow involves

cross-domain access using a server-based policy file.

Bypass enhanced security restrictions

With enhanced security enabled, only the files, folders, and locations that have been trusted are exempt from enhanced

security’s restrictions. You can specify trusted locations and files in several ways, depending on the action the PDF is

attempting to complete.

• Use the privileged locations feature in the Enhanced Security panel to trust files, folders, and host domains (root

URLs).

• Configure Internet access using the Trust Manager. (See URL settings .)

• For certified PDFs, trust the signer’s certificate for privileged network operations, such as networking, printing, and

file access. (See

Set the trust level of a certificate .)

• Control cross-domain access using a server-based policy file. (See the Cross Domain Security document at

www.adobe.com/go/learn_acr_appsecurity_en.)

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Adobe Acrobat XI User Manual Page 359

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