Invisible or visible watermarks?

Watermarking – invisible watermarks (secret) or visible (public)?

Invisible watermarks are great for protecting images from copyright infringement but don’t work so well with documents.  This blog explains why visible watermarks are more effective as a document copy deterrent.
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Document Security Methods

Types of document security methods for protecting digital documents.

There are many different types of document security methods to choose from – password protection, public key technology, and tokens to name a few.  So what is best for digital document protection?
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PDF Passwords are obsolete

Why PDF password protection is useless for protecting PDF files.

PDF password protection may seem a quick and easy option to protect PDF files but it provides a fig leaf of security at best.  If you want to protect PDF documents securely then you need to look at PDF DRM solutions.
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Document DRM, DCMA & EUCD

The EU Copyright Directive – how does it affect publishers?

The European Copyright Directive (EUCD) sets new copyright regulations to help protect IPR.  Is it enough however to protect documents and other published information or is document DRM the way forward for Publishers?
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Document Encryption & DRM

Document DRM: Replacing Encryption as the Standard for Document Protection.

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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