Sending an electronic mail message is like sending a postcard, says scientist Andy Yen in this thought-provoking talk: Someone can read it. Yet encryption, the expertise that protects the privacy of electronic mail communication, does exist. It is that until now it's been difficult to put in & a hassle to make use of. Showing a demo of an electronic mail program they designed with colleagues at CERN, Yen argues that encryption can be made simple to the point of becoming the default option, providing true electronic mail privacy to all.

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