While evolving from an initial skeleton driver for one Intel QuickAssist device to a more robust and feature-rich driver that handles multiple device generations, we've learned a lot. In this presentation we will focus on recent multi-faceted work we've done to ensure the robustness, security and reliability of the driver. From fuzzing to injecting errors, from threat modelling to secure code reviews, we'll share information about the tools and methods used, mistakes made and lessons learned.