Japanese media reports that Line let Chinese engineers at Shanghai affiliate access Japanese users’ data without informing them. Japanese media: Four engineers at a company in China, who perform system maintenance for Line, were allowed to access servers in Japan from 2018 that contained the names, telephone numbers and e-mail addresses of users. Line has since blocked access to user data at the Chinese affiliate, the company said. Line this month became part of Z Holdings, formerly Yahoo Japan, creating a $30 billion internet heavyweight to compete against local and U.S. rivals.