SHANGHAI—Shares in Alibaba Group fell the most in a month on Friday, after the Wall Street Journal reported that the Chinese tech giant’s cloud division has been summoned by Shanghai authorities in connection with a theft of police data.
An anonymous hacker had earlier this month claimed to have obtained personal information of more than 1 billion Chinese residents from the Shanghai police.
A dashboard for managing the database was left open on the internet for over a year without a password, which made it easy to access and retrieve its contents, the Wall Street Journal said, citing cybersecurity researchers….