Top Tech News : Report: North Korean Hacking Increases Ahead of G-20

"Three days after South Korea strengthened cybersecurity measures for main government and civilian web sites to cope with possible cyberattacks by hackers in North Korea, a South Korean newspaper says hackers based in China have collected unspecified minor information about the Group of 20 summit from South Korean government networks." ~Hyung-jin Kim

http://www.toptechnews.com/story.xhtml?story_id=012001CFSQ8O
It is the sibling rivalry going on between them I guess. But this is something to keep an eye on.