YouTube says it spots most terrorist videos before they're flagged

Last year, tech giants started working together to combat the spread of terrorist content online. One of them is Google-owned YouTube, which began implementing stricter measures in June in an effort to get rid of extremist videos that tend to pop up on the platform. According to the video streaming website, its flagging technology is now good enough that over 83 percent of the terrorist-related videos it removed over the past month didn't stay online long enough to get a single flag from a human user. YouTube upgraded the technology by feeding it a huge volume of new training examples. The company tasked the people working on the feature to review over a million videos and find the right ones.