The games were offered through South Korean sites between May 19 and September 16 this year, the National Intelligence Service said in a report to parliament.
The apps have since been removed and the actual number of phones infected is unclear.
While phones were infected, the software doesn’t appear to have caused any damage but has left the phones vulnerable to eavesdropping and remote video taping, the reports said.
North Korea has often been blamed for cyber attacks on South Korean companies and More >
Kim Jong Un visited on Saturday the Pyongyang factory where North Korean cell phones are supposedly made, according to the state-run Korean Central News Agency.
Photos of the visit, released by KCNA, show Kim touring the May 11 Factory and talking to officials. There’s also a picture of what’s said to be the latest cell phone on the North Korean market, an Android phone called “Arirang.” (See right, click for larger image.)