CHILDREN are being targeted by internet blackmailers, with many forced to use webcams to film themselves performing sex acts or self-mutilation because they fear having their naked pictures sent to their families, child protection experts warn.
The blackmailing of children has emerged as a fast-growing new method employed by sadistic abusers who operate behind fake profiles on social networks to take advantage of youthful sexual experimentation and snare their victims, driving some to self-harm and suicide.
A single police operation discovered that a small ring of paedophiles overseas had pressured more than 300 children, including 96 in Britain, into performing live sex acts online.
Some of the youngsters attempted suicide when they were threatened with having their behaviour made public, according to the Child Exploitation and Online Protection Centre (Ceop).
Police analysis of computers reveals that, before befriending a child they intend to groom for online abuse, perpetrators often research the victim's location, school and other details, so as to present a convincing picture of themselves as a local young adolescent. Children as young as eight are being targeted, according to CEOP.
Such grooming often starts on open chat forums before moving to private areas where the talk swiftly becomes more explicit. The threats usually start after children have been tricked into posting compromising pictures of themselves that they fear could be distributed more widely. In one online conversation retrieved by the authorities, an abuser tricked his victim and then became increasingly aggressive, saying he did not care if the boy killed himself. "I totally own you," he said.
The practice appears to be a new, more menacing development in the world of cyber-bullying. Children have been forced to film themselves on webcams as they write degrading statements on their bodies or cut themselves, says CEOP.
One abuser collected images of his blackmailed victims in a folder named "slaves".
A British teenager is one of seven young people who have killed themselves over blackmail. Daniel Perry, 17, of Dunfermline, Fife, leapt from the Forth Road Bridge in July. He had been having online chats with a person he believed to be an American girl of his own age, but was then told his conversations would be played to his family and friends unless he paid money into a bank account. Police are still investigating Daniel's death.
Experts said that, while they had seen a few cases of extortion, most blackmailers were motivated by sexual desire and sadism.
"There is a desire for power and control, and getting a kick out of causing as much pain as possible," said Dr Elly Farmer, a clinical psychologist.
CEOP has carried out 12 operations over the past two years in which the blackmailing of children into performing sex acts was a clear motive, with 424 victims worldwide and 184 in Britain. Five of those operations - against groups and individuals - were in the UK.
CEOP said the number of victims identified represented a fraction of the number targeted.
The global nature of the problem was highlighted by "Operation K", launched this year after a complaint by one victim to police in Britain. It revealed evidence of a group of friends in an unspecified country acting together to ensnare young children. They operated dozens of profiles and email addresses on five websites.
Most of the British children targeted were boys aged 11 to 15. Britons were disproportionately targeted because they spoke English, and in the apparent belief that liberal values in this country were likely to make them more susceptible to online grooming, CEOP said. Many of the victims were forced to conduct graphic sex acts.
"The coverage was immense," said CEOP's operations manager Stephanie McCourt. "It was very easy for children to get caught up in that process."
A group of men, aged 20 to 44, are due to go on trial within the next month in an unspecified non-European country that authorities declined to name for legal reasons.
CEOP said a third of its operations had seen abusers operate on the so-called "Darknet" - an encrypted sub-layer of the world wide web that is supposed to ensure anonymity - but officials said people were arrested in every "sting". They declined to say how suspects were identified.
"Young people must remember that the online world is the real world. Pictures can be distributed to thousands of people in seconds and can never be fully deleted," said John Cameron, the head of the NSPCC helpline.
"We need to educate young people but also reassure them that no matter what threats people make to them over the internet, they can be stopped and the crime they are committing is very serious and can result in a lengthy jail sentence."
Last year, two brothers in Kuwait were jailed for five years after targeting 110 children around the world using similar tactics, with the majority from Britain. Mohammed Khalaf Al Ali Alhamadi, 35, and 27-year-old Yousef Al Ali Alhamadi were found to have blackmailed children from a dozen countries. They often pretended to be someone the victim already knew on social networks, then tricked them into handing over online passwords.
Andy Baker, the deputy chief executive of CEOP, said: "These offenders are cowards. They hide behind a screen and, in many cases, make hollow threats which they know they will never act on because sharing these images will only bring the police closer to them."