This paper presents a survey on security and privacy issues in big data and NoSQL. Due to the high volume, velocity and variety of big data, security and privacy issues are different in such streaming data infrastructures with diverse data format. Therefore, traditional security models have difficulties in dealing with such large scale data. In this paper we present some security issues in big ...

To address the ever increasing demand for wireless bandwidth, cognitive radio networks (CRNs) have been proposed to improve the efficiency of channel utilization. CRN permits unlicensed users to utilize the idle spectrum as long as it does not introduce interference to the primary users due to the Federal Communications Commission’s recent regulatory policies. In this paper, we first identify s...

For searchable symmetric encryption schemes (or symmetrickey encryption with keyword search), the security against passive adversaries (i.e. privacy) has been mainly considered so far. In this paper, we first define its security against active adversaries (i.e. reliability as well as privacy). We next formulate its UC-security. We then prove that the UCsecurity against non-adaptive adversaries ...

Even though Privacy concerns and security concerns are acknowledged as separate constructs, many studies argue that they are related or, even worse, confused. Hence, this study clarifies the nuances between privacy and security concerns, and identifies the dimensions which pertain purely to the security side. It develops a scale to measure those “security dimensions”. It shows that unique dimen...

background and goal: ict development in recent years has created excellent developments in human social and economic life. one of the most important opportunities to use information technology is in the medical field, that the result would be electronic health record (ehr).the purpose of this research is to investigate the effects information security requirements in electronic health records a...

Privacy issues related to mass surveillance received unprecedented attention in 2013 and 2014. While the debate so far has focused on internet-based surveillance, the concerns raised by increased awareness of state surveillance capabilities have far reaching consequences for discussions on legislation relating to security, privacy and liberty in a range of domains. Focusing on train/metro trave...

Although outsourcing data to cloud storage has become popular, the increasing concerns about data security and privacy in the cloud blocks broader cloud adoption. Ensuring data security and privacy, therefore, is crucial for better and broader adoption of the cloud. This tutorial provides a comprehensive analysis of the state-of-the-art in the context of data security and privacy for outsourced...