South Korea’s data protection watchdog has fined the national court administrator over an alleged North Korean breach that resulted in the theft of almost one terabyte of citizens’ personal information.

The Personal Information Protection Commission (PIPC) said in a press release on Thursday that it imposed a fine of approximately $140,000 (207 million won), with an additional $4,100 (6 million won) in penalties, against the Court Administration Office for violating the Personal Information Protection Act.

The press release did not specify the attacker, but the punishment relates to a series of breaches over two years that the police previously linked