SEOUL, July 21 (Reuters) - South Korea's Foreign Ministry said on Tuesday a "significant" amount of data appeared to have been exposed in ‌a cyberattack on a government-run diplomatic academy, as authorities examine ‌potential involvement by foreign state-backed hacking groups. Advertisement AdvertisementAdvertisement AdvertisementThe comments followed ⁠a ministry statement issued on Monday disclosing that unidentified attackers exploited a previously unknown "zero-day" software vulnerability and security configuration weaknesses to compromise the Korea National ​Diplomatic Academy's ​online education system. South Korean daily Dong-A Ilbo, citing ​government sources, reported that personal ​information belonging to about 6,000 current and former diplomats ‌and officials seconded from other ministries ​may have been ​compromised. Advertisement AdvertisementAdvertisement AdvertisementThe report said intelligence authorities were investigating whether a North Korean-linked hacking group could have targeted the data, which includes information on ​diplomats stationed overseas. Park said ‌the ministry was working closely with relevant agencies to establish the ​full extent of the breach and strengthen internal cybersecurity systems.