Integrated systems security: hardware-based threats and solutions Regis Leveugle - TIMA, France Abstract This tutorial discusses the specific design constraints related to secure integrated or embedded systems, or at least the most critical elements in such systems, e.g. cryptoprocessors. The main focus is on hardwarebased attacks and some possible solutions. After a presentation of the general context, the basics of circuit-level attacks are summarized. Circuit- and architecture-level methods for the design and implementation of robust secure circuits are explained, including manufacturing test concerns. Characteristics and limitations of the main hardware protection schemes (also called counter-measures) are discussed. Experimental attack data are shown on several implementation technologies (ASIC and FPGA). Keywords: Integrated systems, embedded systems, security, attacks, DPA, EMA, DFA, counter-measures