This clip is associated with Dokkaebi, an operator from Tom Clancy’s Rainbow Six Siege whose Logic Bomb ability makes enemy phones ring. The sound became widely recognized in R6 clips, montages and memes because players immediately connect it with lost stealth and sudden pressure. Outside the game, creators use it as a shorthand for being tracked, interrupted or caught at the worst moment. Its staying power comes from how specific and memorable the alert is to anyone familiar with Siege.