Japanese retail group Fast Retailing, the company behind the Uniqlo chain, said its Chinese portal was not affected in the latest hacking attack on the company, the Beijing Youth Daily reported.

A uniqlo store in central China's Wuhan City. (File photo: VCG)

Fast Retailing said that hackers may have gained access to the personal information, purchase histories and partial credit card information of approximately 460,000 users of its Uniqlo and GU brand e-commerce portals.

The company also said it had taken measures to improve safety. It apologized to customers and advised users to change their passwords. The incident was limited to the company's Japanese websites.

Uniqlo said the company's business in China has always strictly abided by national laws and regulations and protected consumers' personal information through strict management procedures and technical means.