Online video has long been a crucial recruitment and propaganda tool for the Islamic State in Iraq and Syria (ISIS) as well as al Qaeda and other terrorist organizations. Facing sharp criticism over the situation, these companies claimed last year to be stepping up efforts to use both human employees and artificially intelligent software to find and delete videos promoting violence. But the Counter Extremism Project (CEP) also notes terrorists are still finding a big audience on Google’s video-sharing network. ISIS members and supporters uploaded 1,348 YouTube videos garnering 163,391 views between March and June, according to CEP. “That’s a lot eyes on those videos,” says Hany Farid, a senior CEP adviser and the study’s lead researcher. Twenty-four percent of those videos remained on YouTube for at least two hours—long enough to be copied and disseminated on Facebook, Twitter and other popular social platforms, even when YouTube could find and delete them. The videos CEP tracked were posted by 278 different accounts, 60 percent of which were allowed to remain on the platform even after having videos deleted by YouTube. “It’s discouraging that accounts caught posting terrorist material are allowed to continue uploading videos even after they’ve had their videos removed for violating YouTube’s terms of service,” says Farid, who is also a Dartmouth College computer science professor. “We know these videos are being created for propaganda purposes to incite and encourage violence, and I find those videos dangerous in a very real way.”