Web’s Reach Binds N.S.A. and Silicon Valley Leaders

When Max Kelly, the chief security officer for Facebook, left the company in 2010, he did not go to Google or Twitter. Instead the man who was responsible for protecting the personal information of Facebook’s more than one billion users from outside attacks went to work for another institution that analyzes large pools of data: the N.S.A..

Twitter Isn’t As Democratic As You Think

While social media revolutionizes how the world responds to political and social events, it may be a double-edged sword. Researchers warned that the tendency to fixate on a small number of opinions encourages the proliferation of rumors, misinformation, and political polarization.

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