Among the purchasers of the hacking program from the enterprise was south Korean puppet army unit 5163, an anonymous name the IS has used for foreign trade.

IS, going by that name, had a deal with the enterprise through a private business and paid 273,000 euros for RCS program on Jan. 5, 2012.

In addition, IS has so far spent 390 million won for the management and maintenance of the RCS in five installments.

IS has never denied this fact, but let loose sophism that this was for a research purpose to cope with the hacking attack from the north.