Adobe 22020737 Acrobat X Pro Manual - Page 227

USING ACROBAT X PRO 221 Security Opening secured documents Acrobat and Reader warn you any time you try to open a URL (website) or a file attachment that uses a disallowed file type. URLs and disallowed file types are potentially dangerous because they can transfer or run programs, macros, or viruses that can damage your computer. Examples of disallowed file types include .exe and .zip files. Documents can be secured in several ways. To view the security settings of a document, choose File > Properties in Acrobat or Reader. From the Document Properties dialog box, click the Security tab. If you have trouble opening a PDF, or you're restricted from using certain features, contact the author of the PDF. Password protected A password-protected PDF either requires a password to open or a password to change or remove restricted operations. If a document has restricted features, tools and options related to those features are dimmed. Certified Certifying a document assures recipients that the document is authentic. Certifying signatures also include information to allow or disallow particular actions, such as filling forms and modifying the document. When you submit a certified form, you are assured that it is going back to the valid author. A document with a valid certificate displays a Blue Ribbon icon . A PDF Portfolio with a valid certificate displays a Signature Badge. A PDF Portfolio with a certifying signature Adobe LiveCycle Rights Management ES configured Adobe LiveCycle Rights Management ES (ALCRMS) lets you manage accounts and configure security policies for your organization. ALCRMS lets you apply a policy to documents without the need for digital signatures and certificates. More Help topics "Digital signatures" on page 249 "Securing documents with passwords" on page 224 "Certificate security" on page 227 Choosing a security method By adding security to documents, you can limit viewing, editing, printing, and other options to only the specified users. Choosing which type of security to use Security features range from relatively simple measures to sophisticated systems adopted by corporations and agencies. Which feature you choose depends on what you want to achieve. Here are some examples: • You want only certain people to view your PDF. The easiest solution is to add a password to the PDF and send it to your intended recipients. (See "Add password security" on page 224.) • You don't want anyone to print or edit your PDF. You can block printing and editing from the same dialog box that you use to add a password. (See "Add password security" on page 224.) • You want to assure your recipients that the PDF is really from you. The best way is to purchase a digital ID from a certificate authority. Alternatively, you can create a self-signed digital ID if you are communicating with a group that you trust. (See "About digital IDs" on page 238 and "Securing documents with certificates" on page 227.) Last updated 10/11/2011