A BBC investigation has found extreme material encouraging and glamorising eating disorders on the social media platform Instagram.

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Children as young as 14 are making thousands of pounds a week as part of a global hacking network built around the popular video game Fortnite.

About 20 hackers told the BBC they were stealing the private gaming accounts of players and reselling them online.

"The email said that my password had been changed and two-factor authentication had been added by someone else. It felt horrible," he recalled.

Two-factor authentication meant his account could only be accessed by entering a code sent to an email address or app registered by the perpetrator.

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You can learn how to use two factor authentication for Fortnite here

Five years ago Ashleigh wouldn't have dreamed of sharing a selfie on Instagram.

But then she discovered Instagram's recovery community - other people like herself who posted about the highs and lows of living with an eating disorder.

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The app collects GPS coordinates on users even when they're not using it. By sharing that data, both Facebook and Instagram could collect huge amounts of information on users to better target ads.

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Tracking your phone's gyroscope, scanning your messages and giving your data to third-party companies.

These are just three of the things you agree to when signing up to some tech companies' apps and sites.

BBC research has found some of the language used in privacy policies and terms requires a university education to be understood.

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What is 'bait out'?
"Bait out" pages are online groups or pages that invite users to share nude images, videos or sexual gossip about others, according to Childnet .

Users are often only allowed access to the group or page once they have shared such content.

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