To ask the Secretary of State for the Home Department, pursuant to her public statement of 26 March 2017, what her Department's definition of necessary hashtags is.
3 April 2017
The Home Secretary was referring to image hashing, the process of detecting the recurrence an image or video online.
Hashing has proved effective in the removal of images of child sexual exploitation and has been used by a number of organisations including the Internet Watch Foundation and INTERPOL.
In December 2016 at the EU IT Forum, Facebook announced the development of a cross-industry shared hashing database to improve the detection and removal of terrorist content online. The implementation of this database will help to clear large caches of known terrorist content from a range of online platforms.
The Home Secretary is continuing to challenge Communications Service Providers to improve the automation of detection and subsequent removal of new terrorist content online with the formation of a new industry led forum which will, amongst other things, lead on technical innovations.