This book investigates the recent history of the drug market on the dark web and suggests interventions that can be used to curb the trade of illegal products in the internet's underbelly. It outlines the current landscape of this market, highlighting: • What is known about drug markets on the dark web. • How transactions involving illicit goods occur in cryptomarkets. • How the illegal trade of drugs is conducted in the dark web. • The role of blockchain technology in these transactions. The chapters that follow identify effective methods suppliers and purchasers employ to trade under conditions of uncertainty. They explore the role that trust plays in network structures and vendor selections for drug markets. The volume includes a review of the targeting strategies available for law enforcement and offers new solutions to target the trade of illicit goods on the dark web. It is ideal for law enforcement officers and practitioners combatting cybercrime.