Most sex offenders saw abuse online when they were children themselves. That's what a world-first report has uncovered. Sky News has been given exclusive access at the findings of an anonymous dark web survey of more than 20,000 online offenders globally. Experts say there is a 'notable gap' in what we know about how perpetrators are using the web to exploit children. #onlinesafety #skynews #uk SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews Follow us on Twitter:

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