Dear Colleague, apologies for multiple receptions of this message. We invite you to submit a contribution to CRITIS 2017, the International Conference on Critical (Information) Infrastructures Security. This year the conference will take place in Lucca, a gorgeous Renaissance city in Tuscany, 9-11 October 2017. Deadline for submission has been post-poned at June 23-rd. Please not that the term is strict and there will be no further change. Papers can be submitted via EasyChair; for poster contributions, submission can be limited to an extended abstract. All accepted contributions will be included in full length in the pre-proceedings that will appear at the time of the conference; accepted papers are planned to be published in the LNCS Springer-Verlag series. Special attention will be devoted to young talents. To this purpose, a price (YCA: Young Critis Award) will be awarded to the best contribution presented by a young author. On 12-13 October, the conference will be followed by two satellite workshops on Energy and Water. Ww will benefit from three invited speeches by Robert Baldoni, Javier Larraneta and Igor Van Gemert. For further details, please visit our website www.critis2017.org. We would appreciate you to advertise the conference by the attached leaflet. The organizers: Cristina Alcaraz, Hypatia Nassopoulos, Grigore Havarneanu Antonio Scala, Gregorio D’Agostino