Encryption is used to protect files but does not control the distribution of information – once a user can decrypt a file they can do what they like with it. DRM is better able to protect content from copying & redistribution.
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Microsoft has defined RMS policy as a source of weakness in controls rather than a failure of cryptography. This means that letting someone see the document was tantamount to giving it away. So how secure is it for protecting documents? Read more
Financial advisors need to share sensitive information with auditors, investors, analysts and other third parties without compromising the security of their documents. DRM enables financial to comply with regulation and share documents securely. Read more
Document, PDF and email DRM relying on the honor system is like putting up a sign asking a burglar nicely not to steal your property. In practise you need proper security (e.g. a decent lock) and some way of enforcing effective controls. Read more
When sending PDF files securely by email you need to think about protection in transit and ensuring only the correct recipients can view them. Then consider controlling what users can do with those PDFs once they have received them to provide overarching security. Read more