By NICOLE PERLROTH and VINDU GOEL
After surveillance by the National Security Agency, major Internet companies like Microsoft and Yahoo have moved to strengthen protections of users’ data.
Published: December 5, 2013 at 12:00AM
from NYT Technology http://www.nytimes.com/2013/12/05/technology/internet-firms-step-up-efforts-to-stop-spying.html
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