Google revealed this past June that it was working on a way for users to easily encrypt their emails, but it turns out it's not alone in its ambitions. Alex Stamos, Yahoo's Chief Information Security Officer, said at the Black Hat conference in Las Vegas that the company wants to offer end-to-end encryption for Yahoo mail come 2015. What's more, that PGP-based security system should interact seamlessly with Google's -- should they choose to, people from both sides of the Google-Yahoo divide will be able to send each other secure messages that are totally unintelligible to curious (or malicious) outsiders.

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