In the second of our anonymous double-bill interviews, Aleks Krotoski talks to Andrew Lewman, executive director of the Tor software project.
Tor is an encryption software, known as "onion routing", that allows people to browse online anonymously, hiding their location and avoiding traffic analytics associated with their online activity.
The software began as a project sponsored by the US naval research laboratory but is now run as a not-for-profit business that offers the software free of charge online.
Aleks and Andrew discuss the role of Tor and its wish to create an anonymous space online. They also talk about the growing trend for companies to collate and monitor your online activity in order to build up a profile of you for monetary gain.