Ah yeah, that makes sense and now that you mention it I remember reading a few years ago how Nikon (and presumably Canon) make special versions of their cameras for law enforcement that have additional security and integrity stuff.
also:
That article comes of as slightly preachy, and is also mistaken when it says raw files are a read-only format. While for most purposes that's true, there's nothing inherent in the format that makes it unmodifiable – if you can read the data and translate it into an image, you can do the reverse.
EDITED: 16 Aug 2011 10:27 by CAER