More than one in ten children say they have experienced cyber bullying according to a new report.

The study carried out by the National Anti-Bullying Research and Resource Centre at Dublin City University was published today ahead of Safer Internet Day tomorrow.

Dr James O'Higgins Norman, the centre's director, said these findings are based on an analysis of all surveys on cyber bullying over five years up until 2015.

The research shows that 14% of primary school children and 10% of post primary school students had experienced some form of cyber bullying.

CyberSafeIreland says parents are overwhelmed by the challenges they face keeping their children safe online.

The children's internet safety charity has spoken to more than 4,000 children aged between 8 and 13 since it was launched just over a year ago.

The charity's research has found that 28% of the children have had contact with a stranger on social media, messaging or on gaming platforms.

It says while most of those cases are harmless there is a significant concern for the 5% who are in contact with a stranger on a daily basis.