Project Arachnid to target child sex abuserspublished at 12:29 British Summer Time 3 October 2017
According to the National Crime Agency there has been an "exponential surge" in the volume of child sexual abuse referrals.
The home secretary says: "They tell me it is one of the most challenging threats we face. This is a vile crime, with thousands of victims around the world."
She announces that the government is investing in a technology developed in Canada called Project Arachnid.
It's software that "crawls, spider-like across the web, identifying images of child sexual abuse, and getting them taken down, at an unprecedented rate".