Live streaming of child sex abuse via webcams is an emerging threat, experts have warned, amid a doubling of reported indecent images. The Child Exploitation and Online Protection Centre said children were being abused to order". Offenders targeted vulnerable families overseas, paying them to facilitate child abuse, according to its report. CEOP said those carrying out abuse used a "hidden internet" to disguise their identity and avoid detection. The child protection body - part of Home Office's Serious Organised Crime Agency - said it received 8,000 reports of indecent images of children being shared last year. It said live streaming emerged in 2012 as a means of producing and distributing images. "We're seeing cases where they're effectively being abused to order for paying customers," chief executive Peter Davies told the BBC. He said some of those exploiting children via the internet were in the UK. An estimated 50,000 UK web users are involved in distributing abuse images. Children were forced to engage in sexual activity on live webcams in exchange for payment to the family or organised crime gangs. Tech-savvy paedophiles have turned to networks specifically designed to conceal the identity and location of their users. Using a variety of technological tricks, so-called "dark nets" - Tor, I2P, Freenet and many others - hide the giveaway identifiers while allowing people to go on using the web.