Secret messages could be hidden in net phone calls
New Scientist, 2 June 2008
http://technology.newscientist.com/channel/tech/mg19826586.000-secret-messages-could-be-hidden-in-net-phone-calls.html?feedId=online-news_rss20
"THE next time your internet (VoIP) phone call sounds a bit fuzzy, it might not be your ISP that's to blame. Someone could be trying to squeeze a secret message between the packets of data carrying the caller's voice."
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