The FBI succeeded in accessing the San Bernardino iPhone by using a hacker. Photograph: AFP

In early 2003, FBI agents hit a roadblock in a secret investigation, called Operation Trail Mix. For months, agents had been intercepting phone calls (...)

Light brigade: Austin during SXSWi. Photograph: Michael Buckner/Getty

If you stop for a moment, say by the escalators in the cavernous convention centre in Austin, Texas, and try to take it all in, it makes no sense. (...)