Almost 1,000 North Korean defectors have had their personal data leaked after a computer at a South Korean resettlement centre was hacked, the unification ministry said.
A personal computer at the state-run centre was found to have been “infected with a malicious code”.
The ministry said this is thought to be the first large-scale information leak involving North Korean defectors.
The hackers’ identity and the origin of the cyber-attack is not yet confirmed.
The North Gyeongsang resettlement centre is among 25 institutes the ministry runs to help an estimated 32,000 defectors adjust to life in South Korea.