Chapter 12 - Security and Privacy in Big Data

Abstract

In the Big Data era, it is more and more important and challenging to store massive data securely and process it effectively. Generally, Big Data is processed and queried on the cloud computing platform. Cloud computing can provide various elastic and scalable IT services in a pay-as-you-go fashion, but also it brings privacy and security problems. Additionally, adversaries can utilize correlation in Big Data and background knowledge to steal sensitive information. But the data correlations in Big Data are very complex and quite different from traditional relationships between data stored in relational databases. So it is more and more challenging to ensure security and protect privacy in Big Data. In this chapter, we will discuss important security and privacy issues about Big Data from three aspects. One is secure queries over encrypted cloud data; the second is security technology related to Big Data; the last is the security and privacy of correlative Big Data.