Deterrence: We’re now showing warnings – from both Google and charities – at the top of our search results for more than 13,000 queries. These alerts make clear that child sexual abuse is illegal and offer advice on where to get help.
Detection and removal: There’s no quick technical fix when it comes to detecting child sexual abuse imagery.
This is because computers can’t reliably distinguish between innocent pictures of kids at bathtime and genuine abuse. So we always need to have a person review the images.
Once that is done – and we know the pictures are illegal – each image is given a unique digital fingerprint.