A popular mobile web browser owned by Chinese e-commerce company Alibaba Group Holding Ltd paid more than $1 billion for leaking sensitive user data, a Canadian technology research group said on Thursday. Citizen Lab said Chinese and English-language versions of UC Browser, developed by UC Web Inc, made easily available to third parties personally identifiable information like location, search details and mobile subscriber and device numbers. The transmission of this information "represents a privacy risk for users because it allows anyone with access to the data traffic to identify users and their devices, and collect their private search data", it said in a report. A UCWeb spokesman declined immediate comment. Alibaba did not respond immediately to an emailed request for a comment. Citizen Lab, based at the University of Toronto, said UC Browser had more than 500 million registered users and was the most popular web browser in China and India. Citizen Lab said the Chinese version more vulnerable and said that by installing and opening that version users exposed "a significant number" of personal identifiers and location information to third parties. "By leaking a large volume of fine-grained data points to multiple network operators, the UC Browser app is increasing the risks to its users that such data may be used against them by authorities, criminals, or other third parties," it said. Alibaba fully acquired UCWeb last June, in what was at the time the biggest merger in Chinese internet history.
