The 1st IEEE International Workshop on Scalable Algorithms and Techniques for Big data privacy and security (ScATeB 2015) focuses the attention on scalable algorithms and techniques for supporting privacy and security of Big Data. The SCaTeB 2015 workshop focuses on all the research aspects of scalable algorithms and techniques for supporting privacy and security of Big Data. Among these, an unrestricted list is the following one: Privacy of Big Data: Fundamentals – Scalable Algorithms and Techniques Privacy of Big Data: Modelling – Scalable Algorithms and Techniques Privacy of Big Data: Statistical Approaches – Scalable Algorithms and Techniques Privacy of Big Data: Novel Paradigms – Scalable Algorithms and Techniques Privacy of Big Data: Innovative Protocols – Scalable Algorithms and Techniques Privacy of Big Data: Query Optimization – Scalable Algorithms and Techniques Privacy of Big Data: Non-Conventional Environments (e.g., Spatio-Temporal Data, Streaming Data, Cloud Data, Probabilistic Data, Uncertain Data) – Scalable Algorithms and Techniques Privacy of Big Data: Systems – Scalable Algorithms and Techniques Privacy of Big Data: Architectures – Scalable Algorithms and Techniques Privacy of Big Data: Advanced Topics (e.g., NoSQL Databases) – Scalable Algorithms and Techniques Privacy of Big Data: Case Studies and Applications – Scalable Algorithms and Techniques Security of Big Data: Fundamentals – Scalable Algorithms and Techniques Security of Big Data: Modelling – Scalable Algorithms and Techniques Security of Big Data: Statistical Approaches – Scalable Algorithms and Techniques Security of Big Data: Novel Paradigms – Scalable Algorithms and Techniques Security of Big Data: Innovative Protocols – Scalable Algorithms and Techniques Security of Big Data: Query Optimization – Scalable Algorithms and Techniques Security of Big Data: Non-Conventional Environments (e.g., Spatio-Temporal Data, Streaming Data, Cloud Data, Probabilistic Data, Uncertain Data) – Scalable Algorithms and Techniques Security of Big Data: Systems – Scalable Algorithms and Techniques Security of Big Data: Architectures – Scalable Algorithms and Techniques Security of Big Data: Advanced Topics (e.g., NoSQL Databases) – Scalable Algorithms and Techniques Security of Big Data: Case Studies and Applications – Scalable Algorithms and Techniques