Industry is a privileged ecosystem of technological innovation. At the strategic level, the industrial fabric plays a decisive role in a country’s sovereignty and economic and energy independence. In 2010, the Stuxnet attack on Iran’s nuclear facilities revealed the extent of the threat to these industrial systems. Since then, the list of incidents has grown steadily. In this article published on the SystemX blog, Reda Yaich (research engineer, SystemX) looks at the threat to industrial installations and provides an initial insight into the different defence strategies put in place.