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JavaScripts in PDFs as a security risk

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  1. Acrobat User Guide
  2. Introduction to Acrobat
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    2. What's new in Acrobat
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    4. System Requirements
  3. Workspace
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    7. Asian, Cyrillic, and right-to-left text in PDFs
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    12. PDFs converted to web pages
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    15. Geospatial PDFs
    16. Applying actions and scripts to PDFs
    17. Change the default font for adding text
    18. Delete pages from a PDF
  6. Scan and OCR
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    3. Troubleshoot scanner issues when scanning using Acrobat
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    7. Working with component files in a PDF Portfolio
    8. Publish and share PDF Portfolios
    9. Overview of PDF Portfolios
    10. Create and customize PDF Portfolios
  9. Sharing, reviews, and commenting
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    2. Mark up text with edits
    3. Preparing for a PDF review
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    8. Adding a stamp to a PDF
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    12. Tracking and managing PDF reviews
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  11. Security
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    2. Securing PDFs with passwords
    3. Manage Digital IDs
    4. Securing PDFs with certificates
    5. Opening secured PDFs
    6. Removing sensitive content from PDFs
    7. Setting up security policies for PDFs
    8. Choosing a security method for PDFs
    9. Security warnings when a PDF opens
    10. Securing PDFs with Adobe Experience Manager
    11. Protected View feature for PDFs
    12. Overview of security in Acrobat and PDFs
    13. JavaScripts in PDFs as a security risk
    14. Attachments as security risks
    15. Allow or block links in PDFs
  12. Electronic signatures
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    4. Reading PDFs with reflow and accessibility features
    5. Edit document structure with the Content and Tags panels
    6. Creating accessible PDFs
  15. Searching and indexing
    1. Creating PDF indexes
    2. Searching PDFs
  16. Multimedia and 3D models
    1. Add audio, video, and interactive objects to PDFs
    2. Adding 3D models to PDFs (Acrobat Pro)
    3. Displaying 3D models in PDFs
    4. Interacting with 3D models
    5. Measuring 3D objects in PDFs
    6. Setting 3D views in PDFs
    7. Enable 3D content in PDF
    8. Adding multimedia to PDFs
    9. Commenting on 3D designs in PDFs
    10. Playing video, audio, and multimedia formats in PDFs
    11. Add comments to videos
  17. Print production tools (Acrobat Pro)
    1. Print production tools overview
    2. Printer marks and hairlines
    3. Previewing output
    4. Transparency flattening
    5. Color conversion and ink management
    6. Trapping color
  18. Preflight (Acrobat Pro)
    1. PDF/X-, PDF/A-, and PDF/E-compliant files
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    6. Output intents in PDFs
    7. Correcting problem areas with the Preflight tool
    8. Automating document analysis with droplets or preflight actions
    9. Analyzing documents with the Preflight tool
    10. Additional checks in the Preflight tool
    11. Preflight libraries
    12. Preflight variables
  19. Color management
    1. Keeping colors consistent
    2. Color settings
    3. Color-managing documents
    4. Working with color profiles
    5. Understanding color management
Märkus.

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

Acrobat and Acrobat Reader let you adjust application behavior so that JavaScript executes within your desired level of security. This helps restrict application access to JavaScript APIs and isolates workflows that do not require JavaScript APIs.

  1. Choose Edit > Preferences (Windows) or Acrobat / Acrobat Reader > Preferences (Mac OS).

  2. From the Categories on the left, select JavaScript.

  3. In the JavaScript Security panel, set options to manage JavaScript: as needed.

    Enable Acrobat JavaScript

    Uncheck to disable JavaScript completely or restrict JavaScript through APIs.

    Enable Menu Items JavaScript Execution Privileges

    Enables executing JavaScript by clicking menu items. When off, privileged JavaScript calls can be executed through the menu. Executing non-privileged JavaScript calls through menu items is not blocked whether this box is checked or not.

    Enable Global Object Security Policy

    Allows JavaScript globally through APIs, or trusts specific documents containing JavaScripts.

Alternatively, you can modify your system registry settings to manage JavaScript execution.

For details, see the Application Security Guide at www.adobe.com/go/learn_acr_appsecurity_en.

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