The European Commission has warned Facebook, Google, YouTube, Twitter and other internet technology companies that they must do more to stem the spread of extremist content or face legislation.

Growing pressure from European governments has meant progress has been made by companies in significantly boosting their resources dedicated to help take down extremist content as quickly as possible.

But... [i]f the EU is not satisfied with the further progress on the removal of extremist content by technology companies, which are primarily based in the US, it said it will come forward with legislation next year to force the issue...

A group of technology companies pooling resources to combat extremist content called the Global Internet Forum – a group which includes Microsoft, Facebook, Twitter and YouTube – said that progress had been made