From March 8 to June 8, 2018, the Counter Extremism Project (CEP) conducted a study to better understand how ISIS content is being uploaded to YouTube, how long it is staying online, and how many views these videos receive. To accomplish this, CEP conducted a limited search for a small set of just 229 previously-identified ISIS terror-related videos from among the trove of extremist material available on the platform. CEP used two computer programs to locate these ISIS videos: a web crawler to search video titles and descriptions for keywords in videos uploaded to YouTube, and eGLYPH, a robust hashing content-identification system. CEP’s search of a limited set of ISIS terror-related videos found that hundreds of ISIS videos are uploaded to YouTube every month, which in turn garner thousands of views.