TL;DR's first episode with not one, but two guests! Andreas Kogler from TU Graz stayed at CISPA for three weeks with Faculty Dr. Michael Schwarz's research group. Of course we took the chance to talk to our guest and his host about their past and current projects. With their research on side-channel attacks, they cost CPU vendors quite a few weekends and vacations. Michael and Andreas tell us how they found CPU vulnerabilities that left even them in disbelief and why security often comes at the price of speed.