A new survey has been launched in an effort to find out the true level of cyberstalking in the UK.
It comes a day after the Crown Prosecution Service (CPS) unveiled new guidance to prosecutors and promised to get tough on cyberstalkers.
More than one million women and 900,000 men are stalked in the UK every year, according to the British Crime Survey.
But until now no research has been done to find out how many people are stalked or harassed online.
Read more on BBC.