a whistle blower and a campaigner with one aim to make social media a safer place. angus crawford, bbc news. joshis josh is an investor in silicon valley and a cyber sociologist who has written extensively about facebook. thank you for joining us. let me ask at this festival. do you think facebook does enough? wejust festival. do you think facebook does enough? we just got the figures $13 billion spent on safety and security in five years. it safety and security in five ears. h, , safety and security in five ears. , ~ safety and security in five ears. . years. it sounds like so much money but years. it sounds like so much money but then years. it sounds like so much money but then you - years. it sounds like so much money but then you realise l years. it sounds like so much i money but then you realise that facebook and $29 billion in profitjust facebook and $29 billion in profit just last year. facebook and $29 billion in profitjust last year. up facebook and $29 billion in prof