Online pornography: What can be done to protect children?
25 April 2012 Last updated at 11:58 BST
A group of MPs has called for internet service providers to introduce tougher filters against adult content.
However, a senior executive at Google responded that it is also up to parents to take more responsibility.
Criminologist Mark Williams-Thomas and Jim Killock of the Open Rights Group discussed the best strategies to prevent children from accessing pornography online.