Every email NSA says it got after asking Americans for tips on how to protect their privacy

At the Black Hat hacker convention in 2013, Former NSA director Keith Alexander asked hackers to help the NSA come up with ways to protect Americans' privacy and civil liberties.

"How do we start this discussion on defending our nation and protecting our civil liberties and privacy?" Alexander asked the Las Vegas crowd. "The reason I'm here is because you may have some ideas of how we can do it better. We need to hear those ideas."

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