[ygra]

Considering that the article was written before the talk I'm not sure the talk can be considered the primary source.

[tomw1808]

and its spreading...

http://www.theguardian.com/world/2015/dec/27/north-koreas-co... with the discussion here: https://news.ycombinator.com/item?id=10797927 and here: https://www.reddit.com/r/linux/comments/3yeuqy/north_koreas_...

http://europe.newsweek.com/north-korea-politics-computer-ope... with the discussion on reddit: https://www.reddit.com/r/linux/comments/3ygd3l/north_koreas_...

http://motherboard.vice.com/read/inside-north-koreas-totalit...

and one more http://recode.net/2015/12/27/north-koreas-version-of-linux-s...

[lawl]

I'm a bit late by now, but I'd still consider it the primary source because reuters must have gotten the information from them. These guys did the research. I'm not sure I agree that the primary source necessarily equals to the first publication.