S4 is a conference hosted by Digital Bond, a security consulting firm based in Sunrise, Florida. Now in its fifth year, the S4 draws some of the world’s top experts in securing industrial control systems to sunny Miami Beach to discuss the state of the art. Press was allowed this year for the first time, and was limited to just four news sources: Wired, CBS’s 60 Minutes, The Washington Post and – yes – Threatpost, in recognition of the attention we’ve given to SCADA security news. We were honored to be included. Here are some shots from the show.