Very few people are going to complain to their credit card company, still less to the police, that they have been charged for visiting a site identified as "child rape" – for how do you prove that it wasn't you? Some of the men had visited legal adult pornography sites on the internet, and given their credit card details so they could watch porn films. They had not been to child pornography sites – but once they had given their credit card details, it was very easy for someone else to do so using their credit card number.