A random Telegram message arrives from a stranger. “Hi. Someone is posting your picture and phone number in our channel. I think your information has been leaked. You should talk to this person.” The stranger, seemingly helpful, asks the user to tap “Add Contact.” But as soon as the button is pressed, the user's phone number is shared — and a digital manhunt begins. With only that number, perpetrators scour social media accounts and KakaoTalk to identify the victim’s name, friends and family. Then, without warning, the stranger turns hostile. “I can post your personal information online. I can call your family, your school and your workplace.” The threats grow more menacing. “I can make you quit school. I can make it impossible for you to leave your home.” For the victim, it marked the beginning of a long campaign of intimidation. In a sudden turn, victims were forced to choose between two options: ignore the threat and risk having their names and faces shared online and with people they knew, or follow instructions from a man nicknamed “Pastor.” Some chose to comply.