There's a warning about the risks of posting sexually explicit content online because it could be stolen and copied onto hardcore porn websites.

Newsbeat has seen exclusive figures which show 88% of 12,000 sexual self-generated photos and video found by The Internet Watch Foundation had been stolen and posted on porn websites.

Some of the images and videos were taken from social networking pages.

The Internet Watch Foundation The Foundation spent 47 working hours on the research



A total of 12,224 images and videos were logged



The content was on 68 discrete websites



7,147 were images



5,077 were videos



5,001 were both image and video



Of the 12,224 images/videos, 10,776 were on porn websites



88% of content was taken from the original source site

The foundation monitors online child abuse.

They say it is virtually impossible to make anything disappear from the internet once it is uploaded.

After 47 hours of logging, the charity found more than 12,000 sexually explicit images and videos of people they estimated to be aged between 13 and 20 years old.

Theses were across 68 different websites, including social networking sites.

They traced the paths of the footage and images and discovered nearly 90% of them had been stolen and used elsewhere.

Earlier this year, X Factor judge Tulisa Contostavlos took to YouTube to confirm rumours that online footage of someone performing an intimate act with her ex-boyfriend was her.

After suing a number of companies and her ex-boyfriend, her lawyer says it is "very difficult" to find it on the internet.

Footage online

Jonathan Coad says it costs a lot to take out legal action but there are things people can do.

He advises getting in contact with the hosts of the websites your footage or image is featured on.

He said: "Say, 'This is intimate footage of me, I didn't give consent to it being up there, it's a breach of my rights, please take it down,' and hopefully they should do that."

Mr Coad also had advice for those who posted images and footage online without the consent of those featured in them.

"If you post a series of stills or footage, ie more than one, then you could fall within the protection of harassment act," he advised. "That means it's also a potential criminal offence.

"I think the increase in this being done has started to mean police are taking it a little more seriously than they used to."

There is still ongoing legal action over the Tulisa footage.