In this paper, we present our ongoing work of a policy-driven approach to security requirements of grid data management systems (GDMS). We analyse the security functionalities of existing GDMS to determine their shortcomings that should be addressed in our work. We identify a comprehensive set of security requirements for GDMS followed by the presentation of our proposed Security Requirements M...

the purpose of this study is identify the most distinguishing factors of farmers' attitudes and behaviors regarding food security. the research method was survey and correlational research. the population was 25435 farmers of shush, shooshtar and dezful district. 379 farmers were selected based on the table of takman and morgan. finally, 237 questionnaires were collected. data collection w...

nowadays, world wide web has become a popular medium to search information, business, trading and so on. various organizations and companies are also employing the web in order to introduce their products or services around the world. therefore e-commerce or electronic commerce is formed. e-commerce is any type of business or commercial transaction that involves the transfer of information acro...

Proof of retrievability (POR) is an interactive knowledge proof technique for a storage server to prove the integrity and ownership of clients’ data without downloading them. In this paper we consider efficiency of the POR scheme, when the data stored in cloud is encrypted under fully homomorphic encryption schemes. We presented a POR scheme with new, efficient homomorphic authenticator, which ...

Malware detectors and integrity checkers detect malicious activities by comparing against reference data. To ensure their trustworthy operation, it is crucial to protect the reference data from unauthorized modification. This paper proposes the Soteria Security Card (SSC), an append-only storage. To the best of our knowledge, this work is the first to introduce the concept of an append-only sto...

Cloud Computing has become a well-known primitive nowadays; many researchers and companies are embracing this fascinating technology with feverish haste. In the meantime, security and privacy challenges are brought forward while the number of cloud storage user increases expeditiously. In this work, we conduct an in-depth survey on recent research activities of cloud storage security in associa...

The greatest threat to Information Security are the employees within an organization. Many security controls rely on the user in order to be effective. It is thus vital to educate users about their role(s) in security. Many companies cannot afford, in terms of time or finances, to replace employees during training periods. The Web has long since been identified as a viable alternative to tradit...