About document security
When creating Adobe PDF documents, authors can use the following methods to enhance
document security:
● Password security. You can add passwords and set security options to restrict opening,
editing, and printing PDF documents. (See Adding passwords and setting security options
● Certification security. Encrypt a document so that only a specified set of users have access
to it. (See Encrypting Adobe PDF files using certificates.)
● Adobe Policy Server. Apply server-based security policies to PDF documents. Server-
based security policies are especially useful if you want others to have access to PDF
documents only for a limited time. (See Encrypting Adobe PDF files using security
policies.)
● Document certification. When an author digital signature is added, editing changes are
restricted and detected. (See Certifying documents.)
If you often use the same security settings for a set of PDF documents, consider
creating a security policy to simplify your workflow. (See Creating user security policies.)
Related Subtopics:
Opening Adobe PDF documents with security restrictions
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