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In Acrobat 10, improvements have been made in encryption methods and simplicity of applying and managing document protection. Protection can be applied to PDF files, portfolios, and file attachments to restrict access to features such as printing, editing, commenting, and content extraction. Acrobat 10 offers a wide range of protection methods with varying degrees of encryption to choose from based on document value and user needs. All protection relies on encryption using a password, digital certificate, or server-based rights management solution. To encrypt a file, open the new tools pane, select protection, and choose from the available encryption methods and preset profiles.