Bulgaria

In May 2017, Bulgarian authorities conducted a significant operation against an organized crime group involved in customs fraud. The Southeast European Law Enforcement Center (SELEC) reported that this operation led to the seizure of 213,519 bitcoins. At that time, bitcoin was valued at approximately $2,354 per coin, making the total seizure worth around $500 million. (coindesk.com) The group had allegedly used computer viruses to infiltrate Bulgaria's customs systems, enabling them to import goods without paying the required duties. They chose bitcoin for its perceived difficulty to trace.