Final answer:
Tom's website that connects illegal drug buyers and sellers is categorized as a 'Darknet market' cybercrime.
Step-by-step explanation:
Tom's activities of creating a website that facilitates the sale of illegal drugs by connecting buyers with sellers falls into the category of Darknet market cybercrime. A Darknet market is a commercial website on the dark web that operates via darknets such as Tor or I2P. They primarily function as black markets, selling or brokering transactions involving drugs, cyber-arms, weapons, counterfeit currency, stolen credit card details, forged documents, unlicensed pharmaceuticals, steroids, and other illicit goods as well as the sale of legal products.