Side-Channel Analysis at MAIS: The Life Before and During CROSSING During the several past years expertise on side-channel analysis has been accumulating at MAIS, which has led last year to a successful acquisition of the Project "Secure Refinement of Cryptographic Algorithms" within the Collaborative Research Center "CROSSING". In the first half of the talk we recap major achievements on side-channel analysis at MAIS before the start of CROSSING. In the second half of the talk we present the vision, goals, challenges and structure of our CROSSING project.