Nth Room case

The "Nth Room" case (Korean: n번방 사건) is a criminal case involving blackmail, cybersex trafficking, and the spread of sexually exploitative videos via the Telegram app between 2018 and 2020 in South Korea. A man nicknamed god god (later identified as Moon Hyung-wook, 문형욱) sold sexual exploitation videos on Telegram channels and groups.

A copycat crime, known as the "Doctor's Room", (박사방; 博士房; baksabang) was operated by a man using the screen name Doctor (박사; Baksa, later identified as Cho Ju-bin), who is accused of blackmailing dozens of women, forcing them to take sexually exploitative videos, with some involving rape.

The number of confirmed victims is at least 103, including 26 minors. It was revealed that the victims' pictures were shared and sold to over 260,000 IDs (narrowed down to about 60,000 users, taking into consideration overlapping profiles) and were paid for anonymously in cryptocurrency.

A Netflix documentary about the case, entitled Cyber Hell: Exposing An Internet Horror, was released in 2022.

In 2021, the press stated that the accounts on many platforms were not real. From 2021 to 2024, the site named 'nth room' was closed 5 times.