Others have threatened to post the footage to porn sites or You Tube.
What you may believe to be a highly intimate and private moment may in fact be watched by a room full of strangers.
If you are concerned about a specific cyber security issue you should seek professional advice.
The scammer may pretend to be an attractive, potential partner and strike up an online relationship with you.
It may take some time and seem extremely believable.
Users of video services, such as Skype, should be aware of a variety of scams that may use footage and images captured without your knowledge, to blackmail you.
In one version, the scam originates from a dating website or social network site like Facebook.
Eventually, they may ask you to join a Skype (video) call with them.