Ms Karen White:

On the speed, I would need to speak to our experts to find out how long the process takes and revert to the committee. Our technology is very similar. In the case of child sexual exploitation, we use photo DNA, creating digital fingerprints of the material, and any related material can be removed automatically and immediately from our systems. In the case of terrorist related content, for example, when certain content is identified, as Ms Rush and Mr. Ó Broin noted, it is hashed and given a taxonomy of the type of content before it is shared within our hash-sharing database.

We deploy other measures at Twitter when we identify rule-violating content, such as that which promotes terrorism, in our URL-sharing project. If we identify URLs on our service that direct to another service, whether it be YouTube or others, we will share the URLs with the companies in question to let them know we have removed the content from our service because it violates our rules and promotes terrorism, and to suggest they might wish to review the content to which the links connect on the companies' own service. It is a multi-pronged approach.