Joint Tech Innovation

Hash Sharing Consortium

In December 2016, the founding member companies of the GIFCT (Facebook, Microsoft, Twitter, and YouTube), committed to creating a shared industry database of "hashes" — unique digital "fingerprints" — for violent terrorist imagery or terrorist recruitment videos that we have removed from our services. By sharing these hashes with one another, we can identify potential terrorist images and videos on our respective hosted consumer platforms. This collaboration is resulting in increased efficiency as we continue to enforce our policies to help curb the pressing global issue of terrorist content online.

As part of the GIFCT, the founding companies committed to refine and improve the shared industry hash database, and we have made important progress over the past year:

  • The database now contains more than 200,000 hashes. It allows member companies to use those hashes to identify and remove matching content – videos and images – that violate our respective policies or, in some cases, block terrorist content before it is even posted.
  • The Hash Sharing Consortium includes, Cloudinary, Facebook, Google, Instagram,, LinkedIn, Microsoft, Verizon Media, Reddit, Snap, Twitter and Yellow. We will work to add to new members throughout the upcoming year.