https://cdnph.upi.com/ph/st/th/5201784624121/2026/i/17846243604250/v1.5/Information-of-all-S-Korean-diplomats-presumed-to-be-leaked-officials.jpg" /> Personal information of all South Korean diplomats was presumed to be leaked due to a data breach at an online education system run by an institution affiliated with the foreign ministry, officials said Tuesday.