Unauthorized access to the website of major credit card company Mitsubishi UFJ Nicos Co. may have compromised the personal data of 894 cardholders, it was learned Saturday.
For three days from April 9, the website of Mitsubishi UFJ Nicos, a subsidiary of Mitsubishi UFJ Financial Group Inc., came under attacks that exploited a defect in the OpenSSL encryption software widely used in Internet banking services, according to the company.
The potentially compromised data include the names, addresses and part of the credit card numbers of holders of the MUFG or Nicos credit cards and who also use Internet services.
The company has already informed the cardholders affected by the incident. No damage or abuse of the information has been confirmed, the company said.
“We sincerely apologize for the grave inconvenience,” an official of the company said, adding that it has upgraded its encryption software.