The Child Exploitation and Online Protection (CEOP) Centre has created a new interactive film, First to a Million which focuses on young people who post video content online.
The film highlights how quickly uploaded internet material can spiral out of control and where young people can get help if it does.
The video deals with a range of scenarios that young people might face, including sexually explicit material.
Research shows that 88% of self-generated, sexually explicit online images and videos of young people are taken from their original location and uploaded onto other websites.
CEOP's video can be viewed here:
More top news
A teenage girl has been charged with attempted murder after a welfare officer was stabbed at a school.
Saudi Arabia says women will be allowed to drive for the first time after King Salman lifted a ban.
NHS bosses have warned hospitals need an emergency £250 million cash injection to avert another winter crisis.