The line comes from Tom Clancy's The Division 2, the 2019 looter shooter developed by Massive Entertainment and published by Ubisoft. In the Dark Zone and other PvP areas, ISAC warns players when a nearby agent has gone rogue, marking them as hostile. Clips of the warning spread through gaming edits and streams alongside other tactical callouts like Enemy Spotted, because the phrasing is instantly understood even by people who have never played. Its clean, system-voice style keeps it popular for alerts, memes and montage transitions.