So who are the people behind these often anonymous attacks? Journalist Sali Hughes has been a target of trolls herself. She sets out to find what motivates them and how they justify their actions. She speaks to other women who have been targeted and hears about the devastating impact it can have on people’s lives. With a proposed online harms bill not now due until next year, she investigates what social media and other platforms are doing to tackle the issue and what individuals can do to try to stop the abuse