huge or maybe green if you can kick it's fictions of coal and nuclear power. welcome to you business asia i'm stephen beard's in berlin thanks for watching us class action lawsuit claims that chinese video sharing app tick-tock secretly transferred vast amounts of user data to chinese servers the lawsuit filed in california accuses tech talk of collecting the information without user content consent rather saying it could be used to identify profile and track customers. has become hugely popular with teenagers since it launched 2 years ago last month to hit 1500000000 downloads that's already more than instagram. and for more on this let's bring in rob watts he's been looking into this rob 1st off for months to give what is to talk so take talk is the international version of a chinese doll un and it's a simple concept uses post 15 2nd video up to 15 2nd videos most like it pays to