AI-Security Cyber Security Issues of AI Systems Deep Learning Framework Security Exposing Vulnerabilities in Deep Learning Frameworks (Talks at PoC 2017) Security Risks in Deep Learning Implementations(Paper at IEEE S&P DLS 2018) Imaging Scaling Attacks Practical evading attacks on commercial AI image recognition services (Talks at PoC 2018) Seeing is Not Believing: Camouflage Attacks on Image Scaling Algorithms (Paper at USENIX Security 2019) AI Model Security Checking Defects in Deep Learning AI Models (Talks at PoC 2019)