A self-proclaimed leader of an online group linked to the violent extremist network The Com tells WIRED he is responsible for the flurry of hoax active-shooter alerts at universities across the US in recent days as students return to school.Known online as Gores, the person says he coleads a group called Purgatory, which is offering its followers a menu of services, including hoax threats against schools—known as swatting—for just $20, while faked threats against hospitals, businesses, and airpo...