2,100 cyber crimes reported in Northern Ireland in 2012
23 September 2013 Last updated at 18:47 BST
Reported crimes on social network sites Facebook and Twitter in Northern Ireland increased from 71 in 2010 to 2,100 in 2012, police have revealed.
The figure was revealed as a initiative aimed at making teenagers aware of cyber crime is launched on Monday.
A play is to be performed at a school on the outskirts of Belfast, tackling issues of online safety, grooming and cyber-bullying.