A Google search removal request is displayed on the screen of a smartphone in London. The company says it has received more than 70,000 takedown requests following a European court ruling.
Dominic Lipinski/PA Photos/Landov
Journalist Brian Krebs spends time in the dark areas of the Internet, where hackers steal data off credit cards and sell the information in online underground stores. Krebs has learned computer code and how to get onto black market websites and cybercrime networks.