U.S. officials blame North Korea for the hacking, citing the tools used in
the Sony attack and previous hacks linked to the North, and have vowed to
respond. The break-in resulted in the disclosure of tens of thousands of
confidential Sony emails and business files, and escalated to threats of
terror attacks against U.S. movie theatres that caused Sony to cancel the
Christmas Day release of “The Interview,” a comedy about a plot to
assassinate North Korean leader Kim Jong Un…
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https://ca.news.yahoo.com/north-korea-proposes-joint-investigation-us-over-sony-124502713.html