Chilean banking regulator SBIF said that a new information leak has affected more than 50,000 credit and debit cards, Diario Financiero reported.
The SBIF was informed of the data breach July 28, although it noted that the majority of the affected cards are inactive. Banks have already blocked the cards that were active, the regulator said.
Earlier in the day, the regulator was notified of a separate data leak on more than 4,000 cards, although they were later identified as a portion of the cards affected by the breach that happened July 25.
The earlier data breach had impacted about 14,000 credit cards from about 18 banks, with information stolen and published on Twitter.
The SBIF said it continues to investigate the case and gather background information on the matter.