Thursday, December 1, 2011

How to protect a document from information leakage

At times we need to share our eBooks, documents, software, swf flash files and html content with other users external to our organizations. An information leakage concern then arises as we do not have control over what the licensed users can do with our documents i.e. printing, making copies, or even distribution to unauthorized users. The question that begs therefore is about how to protect a document once it is out of our jurisdiction.

Consequently, the best document protection should be a combination of encryption (but not password encryption which can easily be broken) and DRM controls so that when the document is decrypted the DRM controls will enforce usage rights.

DRM controls can be used to disable printing and provide watermarking protection to discourage photocopying of printed material and photographing screen image; DRM can identify the authorized user who let the document/s be accessed by non-licensed persons. DRM also prevents information leakage to unauthorized parties regardless of where the documents are located. DRM is certainly one of the best ways of how to protect a document because you can easily switch off an authorized user immediately you detect a data leak.


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