It is being reported that South Korea is to develop cyber-attack tools to damage North Korean nuclear facilities.
The country's defence ministry aims to develop weapons similar to Stuxnet - a software that is designed to attack Iranian nuclear enrichment plants.
However, security experts have warned that using cyber weapons could be "very dangerous".
Professor Alan Woodward, computer security expert at the University of Surrey said: "The weapon could end up damaging all sorts of things it never intended to."
According to reports, the first part of South Korea's plan is to conduct online including posting to North Korean social networking and social media services.
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