Facebook, Google, Microsoft and Twitter on Monday announced they had joined forces in an attempt to curb explicit terrorist imagery online. The move follows criticism from Brussels that big US social media groups have made insufficient effort to clamp down on hate speech. In a statement, the technology groups said they were building new technology that would identify extremist content, including terrorist recruitment videos and images of executions, via a digital fingerprint

known as a “hash”, which would then be compiled into a shared global database. Once created, the hash would be attached like a watermark to content, which would then be easy to identify and take down. “Our companies will begin sharing hashes of the most extreme and egregious terrorist images and videos we have removed from our services,” the companies said. READ MORE