The Democratic People's Republic of Korea on Sunday denied that it conducted cyber attacks against officials from rival Republic of Korea, calling the ROK's accusation that it did so a "fabrication".

The ROK's spy agency told lawmakers on Friday that the DPRK had recently stepped up cyber attack efforts against the ROK and succeeded in hacking the mobile phones of 40 national security officials, according to members of parliament who received a closed-door briefing.

"The South is claiming the North's cyber attack and using it for its own political purpose," an opinion piece in the Rodong Sinmun, the official daily newspaper of the DPRK's ruling party, said on Sunday.