UPDATE 1-For N.Korea's cyber army, long-term target may be telecoms, utility grids
December 19, 2014 at 03:40 AM EST
SEOUL, Dec 19 (Reuters) - The hacking attack on Sony Pictures may have been a practice run for North Korea's elite cyber-army in a long-term goal of being able to cripple telecoms and energy grids in rival nations, defectors from the isolated state said.