It may be known to hackers and coders worldwide but for most internet users, the so-called 'Deep Web' remains shrouded in mystery, a supposed morass of drugs, deviancy and stolen credit card details.
Interest in this massive part of the Internet - which is inaccessible by search engines and includes blocked sites, limited-access networks and private sites that require login credentials - has piqued in recent years, especially following the 2013 FBI investigation into online marketplace Silk Road that exposed the extent of online drug trafficking. The hit television series House of Cards also featured the phenomenon during its second season.
Now, security software firm Trend Micro has explored the anatomy of the Deep Web, investigating why people go there and the wide range of their transactions. Want to go deeper into the Deep Web? Trend Micro's report has the answers to your key questions.