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Adobe DRM Software PDF Data Security Products. Adobe has a background in data and content security. Any Adobe DRM software that you choose should be simple and easy to use. Adobe DRM programs that use or allow plug-ins are not secure because anyone can load their own plug-ins into Adobe Acrobat that bypass security controls. Check the link :

http://www.locklizard.com/adobe_drm.htm

Adobe DRM Software: Choosing the best PDF Data Security Products Adobe DRM software provides greater protection for PDF files. LockLizard provides PDF Data Security products with DRM controls to protect Adobe PDF documents.

Adobe Content Server provides you with the feature to control user access (by use of a password), prevent editing (also exporting, but not necessarily copying) and reduce printing quality. As Adobe noted, not all PDF viewers actually 'respected' the controls offered, so there were methods for bypassing the initial control system.

http://www.locklizard.com/adobe-content-server.htm

Adobe Content Server | Adobe Digital Rights For PDF Files Adobe Content Server is a server controlled approach to Adobe Digital Rights Management that was introduced to protect PDF files with DRM controls (DRM PDF).