Also see How the Sony Corporation Hack Revived the Lost Art of the Call (NYT) and, coincidentally, German researchers discover a flaw that could let anyone listen to your cell calls (The Washington Post)
"Because here’s the thing about the digital world that we must remember. Nothing you say in any form mediated through digital technology — absolutely nothing at all — is guaranteed to stay private. Before you type anything, just think: How will this look when it gets out? What will Angelina Jolie think if she finds out about this? If Angelina won’t like it, don’t send it. Because Angelina will find out. So will the rest of the world.The Lesson of the Sony Hack: We Should All Jump to the 'Erasable Internet' - NYTimes.com
This might seem like an extreme, perhaps jaded response to the hack at Sony Pictures Entertainment, which has resulted in the disclosure of thousands of private documents ranging from trivial to merely embarrassing to grossly serious."