A leading Seoul-based civic group on Wednesday filed a complaint with the state human rights watchdog, urging the government to allow victims of the latest personal data leak to change their national identification numbers. Personal data of some 20 million clients -- including personal IDs, bank account numbers, addresses and credit ratings -- was leaked from three credit card firms earlier this month, prompting fears that the information could be used in financial scams. The affected firms are KB Kookmin, Nonghyup and Lotte.