The popular apps secretly collecting kids' data

Australia's been hit by a number of large hacking scandals this year, with millions of Optus and Medibank customers having their data stolen.   But did you know children could be just as vulnerable? While young kids are playing on tablets and smartphones, in the background millions of pieces of their personal data are being collected.   Today, the ABC's national education and parenting reporter, Conor Duffy on how tech companies are building complex profiles that could follow our children throughout their lives. Featured:  Connor Duffy, ABC education and parenting reporter