Hardware security is becoming increasingly important for many embedded systems applications and it is expected to increase in the upcoming decades as secure applications will keep growing. The vulnerability of electronic devices that implement cryptography functions has become the Achille’s heel in the last decade: fraudulent manipulations on the hardware implementing security algorithms can allow extracting confidential information, and new threats have menaced secure devices and the security of the manufacturing process. This training school aims at providing theoretical and practical lectures on topics related to hardware security.