Here’s an article this isn’t quite as definitive.
U.S. expected to formally blame North Korea for Sony cyberattack
http://www.reuters.com/article/2014/12/19/us-sony-cybersecurity-usa-idUSKBN0JX1MH20141219
Here’s an article this isn’t quite as definitive.
U.S. expected to formally blame North Korea for Sony cyberattack
http://www.reuters.com/article/2014/12/19/us-sony-cybersecurity-usa-idUSKBN0JX1MH20141219
From the OP’s link:
Seems like they had plenty of time to download whatever they wanted, if true.