3G Mobile Network Security

Here is a good article (in Hebrew) from a colleague of mine, explaining about 3G Mobile Network Security.
The article contains some background about the cellular technology, how things are working, possible risks and how to deal with the risks.

The article can be found at:
http://www.digitalwhisper.co.il/files/Zines/0x08/DW8-1-3GSecurity.pdf

Roy Horev, the author of the article can be reached at royhorev@gmail.com