Dark web orders, crypto payments — four months of tracking leads to arrest
A drug smuggler who used the dark web to place orders and cryptocurrency to make payments has been arrested after a months-long pursuit by customs investigators.
The Seoul Customs Office under the Korea Customs Service announced Wednesday that it had arrested a 29-year-old man, identified only as A, on charges of violating the Act on the Management of Narcotics for smuggling four types of controlled substances through international mail from Europe — 58.95 grams of synthetic cannabis, six cannabis cartridges and 2.9 grams of cocaine. He was detained and referred to the Seoul Central District Prosecutors' Office in June.
Seoul Customs identified the suspect by analyzing the origin countries, recipient information and customs clearance records of international parcels. Investigators determined that A had smuggled narcotics through international mail on six separate occasions between December 2025 and April 2026, then tracked his movements and daily routines for roughly four months before apprehending him near his residence as he was returning home.
The investigation revealed that the suspect had a prior criminal record for the same type of offense yet had continued to use cannabis and other narcotics.
To evade detection by customs and other law enforcement agencies, A ordered the drugs through overseas dark web platforms and paid with cryptocurrency. He also conspired with overseas sellers to use false recipient names and addresses on the international parcels and listed the declared contents as items such as "e-cigarettes" to disguise the shipments as ordinary goods.
He also used AI to search for ways to respond if caught by investigators, having prepared in advance how to evade detection and conceal his crimes.
The case is considered significant because, despite the suspect's meticulous preparation — including the use of AI — investigators reconstructed the entire criminal operation through scientific techniques including customs clearance analysis and digital forensics, tracing every step from dark web orders and cryptocurrency payments to the receipt of international parcels.
Yun Cheong-un, director of Investigation Bureau 1 at Seoul Customs, said the agency would "continuously strengthen our intelligence analysis capabilities and actively apply scientific investigative methods such as digital forensics to track down narcotics smuggling through international mail, expand cooperation with relevant agencies, and do our utmost to eradicate drug crimes that threaten public health and safety."
kwonhl@heraldcorp.com
