Engineering dependable and secure machine learning systems : third international workshop EDSMLS 2020 New York City NY USA February 7 2020 : revised selected papers Quality Management of Deep Learning Systems Can Attention Masks Improve Adversarial Robustness Learner Independent Data Omission Attacks Extraction of Complex DNN Models: Real Threat or Boogeyman Principal Component Properties of Adversarial Samples FreaAI: Automated extraction of data slices to test machine learning models Density estimation in representation space to predict model uncertainty Automated detection of drift in deep learning based classifiers using network embedding Quality of syntactic implication of RL based sentence summarization Dependable Neural Networks for Safety Critical Tasks. This book constitutes the revised selected papers of the Third International Workshop on Engineering Dependable and Secure Machine Learning Systems EDSMLS 2020 held in New York City NY USA in February 2020. The 7 full papers and 3 short papers were thoroughly reviewed and selected from 16 submissions. The volume presents original research on dependability and quality assurance of ML software systems adversarial attacks on ML software systems adversarial ML and software engineering etc