Here's a list of companies allegedly hacked by the United States of America:

  •  RealTek
  •  JMicron
  •  C-Media



And why did the United States hack three Taiwanese technology companies?

To steal digital certificates in order to sign drivers used by Stuxnet and Duqu.

…

Here's a company allegedly hacked by North Korea:

  •  Sony Pictures



Now where do you suppose the DRPK got the crazy idea it was okay to hack companies and to steal data from?

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From DER SPIEGEL: The Digital Arms Race: NSA Preps America for Future Battle