Hackers attacked about 20 million user accounts on the popular Taobao online marketplace in China, e-commerce giant Alibaba Group Holding Ltd. said.
Alibaba said Thursday it protected the vast majority of those accounts by blocking the hackers’ attempts at access, but some attacks on a small number of accounts weren’t intercepted, The Wall Street Journal reported.
An Alibaba spokesman declined to disclose the number of user accounts that may have been accessed by the hackers or to say whether any data has been compromised from those accounts.
Suspects have been arrested, he said.
Alibaba said the suspects tried to gain access to the Taobao accounts by using account login information that had been stolen from other websites.
As some people use the same usernames and passwords for multiple websites, the stolen information matched that of 20.59 million Taobao accounts.
The company said it advised users to change their passwords immediately.
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