This book constitutes the refereed proceedings of six symposiums and two workshops co-located with SpaCCS 2019, the 12th International Conference on Security, Privacy, and Anonymity in Computation, Communication, and Storage. This year's symposiums and workshops are: SPIoT 2019 – Security and Privacy of Internet of Things;

The 8th International Symposium on Security and Privacy on Internet of Things (SPIoT 2019).- Robust Hybrid Lightweight Cryptosystem for Protecting IoT Smart Devices.- A Weighted Risk Score Model for IoT Devices.- Connected Vehicles: A Privacy Analysis.- Privacy-Preserving Big Data Analytics: From Theory to Practice.- The 9th International Symposium on Trust, Security and Privacy for Emerging Applications (TSP 2019).- A Framework to Identify People in Unstructured Environments Incorporating Biometrics.- Continuous Authentication Using Mouse Clickstream Data Analysis.- Presentation Attack detection using Wavelet Transform and Deep Residual Neural Net.- Cost-Efficient Task Scheduling for Geo-distributed Data Analytics.- Task Scheduling for Streaming Applications in A Cloud-Edge System.- The 5th International Symposium on Sensor-Cloud Systems (SCS 2019).- Limited Memory Eigenvector Recursive Principal Component Analysis in Sensor-Cloud Based Adaptive OperationalModal Online Identification.- Optimization of Optical Imaging MIMO-OFDM Precoding Matrix.- Data Collection Scheme for Underwater Sensor Cloud System Based on Fog Computing.- A Survey on Fog Computing.- An Approximate Data Collection Algorithm in Space-based Internet of Things.- Outlier Detection of Internet of Vehicles.- Review of Power Spatio-Temporal Big Data Technologies, Applications, and Challenges.- CP-MCNN:Multi-label Chest X-ray Diagnostic based on Con dence Predictor and CNN.- Naive Approach for Bounding Box Annotation and Object Detection towards Smart Retail Systems.- Evaluation of Face Recognition Techniques Based on Symlet 2 Wavelet and Support Vector Machine.- The 11th International Symposium on UbiSafe Computing (UbiSafe 2019).- An Approach of ACARS Trajectory Reconstruction Based on Adaptive Cubic Spline Interpolation.- Lightweight Distributed Attribute Based Keyword Search System for Internet of Things.- Continuous Objects Detection Based on Optimized Greedy Algorithm in IoT Sensing Networks Distributed Service Recommendation.- The 11th International Workshop on Security in e-Science and e-Research (ISSR 2019).- Software Quality Assurance: Tools & Techniques.- A Campus Carpooling System Based on GPS Trajectories.- The 2019 International Workshop on Cybersecurity Metrics and Risk Modeling (CMRM 2019).- Web-based Intelligence for IDS.- Predictably Deterrable? The Case of System Trespassers.