This volume constitutes the refereed proceedings of six workshops held at the 9th International Conference on Security, Privacy and Anonymity in Computation, Communication and Storage, SpaCCS 2016, held in Zhangjiajie, China, in November 2016: the 7th International Workshop on Trust, Security and Privacy for Big Data, TrustData 2016; the 6th International Symposium on Trust, Security and Privacy for Emerging Applications, TSP 2016; the 4th International Workshop on Network Optimization and Performance Evaluation, NOPE 2016; the Second International Symposium on Dependability in Sensor, Cloud, and Big Data Systems and Applications, DependSys 2016; the Annual Big Data Security, Privacy and Trust Workshop, BigDataSPT 2016; and the First International Workshop on Cloud Storage Service and Computing, WCSSC 2016.