A tablet with one of the pictures posted in the official North Korean Flickr account is seen in this photo illustration taken in Singapore April 5, 2013. North Korea's official Flickr and Twitter accounts were targeted by hackers on April 4. Some of the pictures in the Flickr account were replaced by a caricature of North Korea's leader Kim Jong-un as "Pigsy" from the classic Chinese novel "Journey to the West". REUTERS/Pablo Sanchez (SINGAPORE - Tags: POLITICS SCIENCE TECHNOLOGY TPX IMAGES OF THE DAY)