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If I know what your messages are, if I can read those, I'll probably be able to conclude where you're going, who you're with, the location the message was sent.

Interview with Nancy Gibbs and Lev Grossman, time.com. March 17, 2016.
If I know what your messages are, if I can read those, I'll probably be able to conclude where you're going, who you're with, the location the message was sent.