Banks say rumor of account details leak totally false (3)

Under cameras

But there was concern online about whether bank staff could leak users' card numbers or sell personal information.

Bank officials admitted that staff could see customers' card numbers and their names, but the concern was unfounded.

"Staff have to work under cameras every day and those who are found leaking any private information will be fired and face legal punishments," said an official surnamed Wang with ICBC Shanghai.

"So far we have not found any worker leaking private information," she said.

Last week, hackers posted details of more than 90 million user profiles from Chinese online forums and social network sites on the Internet.

Among them were 40 million user profiles complete with user names and passwords from Tianya.cn, one of the country's biggest online forums, which has more than 60 million users. The others were from IT websites and social networking sites.

The Ministry of Industry and Information Technology of China punished an announcement on Wednesday, warning websites to tighten user profile security.