USB Sticks, Buried Radios, and Bribed Guards: How North Koreans Are Secretly Watching the Outside World

On a freezing January night in 2019, a 34-year-old factory worker in Chongjin — a city of crumbling Soviet-era blocks on North Korea's northeastern coast — hunched over a smuggled Chinese MP4 player, earphones pressed tight, watching a South Korean drama called Crash Landing on You. His name, as he later told investigators after defecting to Seoul in March 2021, was Park Sung-jin. He had paid the equivalent of two weeks' wages for that single USB stick. Had a neighbor reported him, he would have faced years in a political prison camp — or worse. He watched anyway. Park is not alone. Across the most surveilled nation on Earth, a silent revolution of forbidden pixels and contraband frequencies is quietly dismantling the information monopoly of Kim Jong-un's regime, one smuggled flash drive at a time.

North Korean soldiers
North Korean soldiers — Wikimedia Commons

The USB Underground: A Black Market Built on Desperation

The mechanics of information smuggling inside North Korea are more sophisticated than Pyongyang's propagandists dare admit. According to a 2022 report by Seoul-based NGO Database Center for North Korean Human Rights (NKDB), which interviewed 1,217 defectors over four years, approximately 67 percent had accessed foreign media before fleeing — and the primary vehicle was the USB flash drive. Defector testimony collected by this outlet reveals a remarkably organized supply chain. Chinese-manufactured USBs and micro-SD cards are loaded with South Korean dramas, Hollywood films, K-pop videos, and — critically — news broadcasts from outlets including BBC Korean Service and Radio Free Asia, then physically carried across the Tumen River by brokers known as jangmadang traders. These individuals operate within the grey economy of the semi-tolerated black markets that exploded after the catastrophic famine of the 1990s.

Lee Hyun-seo, a defector who fled Hyesan city in Yanggang Province in 2009 and later testified before the United Nations Commission of Inquiry on Human Rights in North Korea in 2014, described the system with clinical precision. "There were men who sold vegetables in the market during the day," she told the panel in Geneva. "At night, they sold USBs from inside their jackets. Everyone knew. Even some of the Bowibu [State Security Department] officers knew — because they were being paid not to look." The bribery of local security officials is not incidental to the system; it is structural. A 2020 report by investigative outlet Daily NK, citing sources inside the country, named the going rate for a Bowibu officer in Ryanggang Province to ignore a USB transaction at approximately 50,000 North Korean won — roughly $6 at black-market exchange rates, but a significant sum in an economy where monthly state salaries hover around 3,000 won.

Notel, Notetel, and the Device That Changed Everything

If the USB stick is the bullet, the notel is the gun. The notel — a portmanteau of notebook and television — is a small, portable media player roughly the size of a hardback book, manufactured primarily in China and sold openly across the border before being smuggled into North Korea. It runs on batteries, meaning it requires no connection to the state-controlled electricity grid, which in most provincial cities operates for only two to four hours per day. It has a USB port. It plays video files. It is, in the hands of a North Korean citizen, a potential death sentence.

Sokeel Park, director of research and strategy at Liberty in North Korea (LiNK), a California-based NGO that has assisted over 1,000 defectors, told this outlet in an interview conducted in Seoul in October 2023 that the notel represented a genuine inflection point. "Before the notel became widespread — roughly 2007 to 2010 — you needed a television, you needed electricity, you needed a fixed space," he said. "The notel made consumption mobile, private, and deniable. You could bury it in your garden. You could carry it in a bag of vegetables. It decentralized the risk." The regime recognized the threat. In 2020, Kim Jong-un's government passed the Reactionary Thought and Culture Rejection Act — known colloquially as Law 309 — which for the first time imposed the death penalty for distributing South Korean media at scale, and sentences of up to 15 years in a labor camp for individual viewing. Human rights organization Korean Future documented at least three public executions in 2021 linked to USB distribution, including one in Wonsan, Kangwon Province, in August of that year involving a 22-year-old man identified only by his family name, Ri.

Arch of Triumph, Pyongyang
Arch of Triumph, Pyongyang — Wikimedia Commons

Radio Waves and the Ghost Frequencies of the Border Zone

Long before the USB era, radio was the crack in the wall. South Korean and American-funded broadcasters — Radio Free Asia, Voice of America Korean Service, and Seoul-based Open Radio for North Korea — transmit shortwave and medium-wave signals into the peninsula nightly. Possession of a radio capable of receiving foreign frequencies is illegal under North Korean law. All legally sold radios in the country are pre-tuned to state frequencies and sealed with a tamper-evident wire by local authorities. And yet, according to a 2021 survey of 200 recent defectors conducted jointly by Seoul National University's Institute for Peace and Unification Studies and the Broadcasting System of Korea, 48 percent reported listening to foreign radio broadcasts while still inside North Korea. The methods for doing so are ingenious. Defector Choi Kwang-hyuk, who fled from the border town of Musan in North Hamgyong Province in December 2017, described to this outlet how residents would modify Chinese-made radios — purchased through traders — and listen beneath thick blankets to muffle sound, volume set barely above silence, during the hours between midnight and 4 a.m. when neighborhood watch patrols, the inminban system of block-level surveillance, were least active.

"My mother listened to Radio Free Asia every night for six years," Choi said, speaking from his apartment in Incheon, South Korea, in September 2023. "She never told me until I was seventeen. She was afraid I would say something at school. That's how we lived — afraid of our own children." The regime's counter-measures have intensified in recent years. The Pyongyang government has deployed mobile radio-frequency detection units — nicknamed gukgaanjeonnbowibu cars by locals — which cruise residential streets scanning for illegal broadcast reception. Defectors from Pyongyang itself, including former mid-ranking Workers' Party official Kim Ryon-hui, who defected via China in 2018 and now works with the Transitional Justice Working Group in Seoul, have described seeing these vehicles operating in the capital's Moranbong and Pyongchon districts as recently as 2017.

Pyongyang's Digital Firewall and Its Cracks

For the elite — the roughly 15 to 20 percent of the population permitted access to Kwangmyong, the state-run domestic intranet — the information landscape is marginally more complex. Kwangmyong contains no foreign content, but its existence has created a class of technically literate North Koreans with basic digital literacy. Among the small number of regime-approved institutions connected to the actual global internet — including Kim Il-sung University, Kim Chaek University of Technology, and certain military and diplomatic facilities — a covert economy of information extraction has reportedly emerged. A 2022 report by Recorded Future's Insikt Group, a cybersecurity intelligence firm, identified recurring patterns of data exfiltration and foreign website access originating from North Korean IP addresses, some attributable to individual curiosity rather than state-sanctioned hacking operations.

The full picture that emerges — from the buried notel in a Chongjin courtyard to the shortwave radio under a Musan blanket to the bribed Bowibu officer in Hyesan's night market — is not one of passive victimhood but of active, determined resistance. Park Sung-jin, the factory worker who watched Crash Landing on You on that January night in 2019, told interviewers in Seoul that the drama — ironically, a love story about a South Korean woman who accidentally paraglides into North Korea — made him cry not for its romance but for what it revealed. "The South Korean actress was wearing clothes I had never imagined," he said quietly. "She was arguing with her boyfriend in a restaurant. She was free to argue. I had never seen that before. Not once in my whole life." Kim Jong-un's government has built the world's most comprehensive censorship apparatus. But it has not built one that is complete. And in the space between the regulations and the reality, millions of North Koreans are watching.

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