The journalist tracked by TikTok

It's a journalist's worst nightmare: your phone has been tracked by rogue employees from a major Chinese tech company, tapping into your sources. That's what happened to Financial Times tech reporter Christina Criddle, who one day received a call from a TikTok representative detailing how some of their staff had tracked her using the app. 
In this episode, Christina tells host Chris Stokel-Walker how she responded to the unfolding saga and what incidents like these show about the emerging challenges for freedom of expression online.
Producers: Christopher Hooton and Nicola Kelly