About the Author
Chad O'Carroll
Chad O'Carroll has written on North Korea since 2010 and writes between London and Seoul.
North Korea’s Koryolink cellphone network includes a “third” network for use by high officials, a surveillance system based on technology found outside the North, and sees surprisingly active internet usage patterns.
All this and more was revealed through an exclusive interview conducted by NK News with Ahmed El-Noamany, a former senior technical director of the network.