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2 Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica

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Distributed social network - data security

Tunia M. A.

Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica

2012

Vol. 12, no. 4

113--122

The present day Internet provides a wide range of services users can benefit from. Some of the services require gathering, processing and presenting data that come from many users in order to deliver additional information. The suitable example can be social networking service. The more valuable data it stores and processes, the more profitable it can become. Users’ personal data can constitute significant value. One of the issues of social networking is storing and processing data by only one entity. Users cannot choose the most suitable security policy because there is only one provided for certain social network. Being part of it, means accepting the risk of unauthorized data distribution and data leakage because of application vulnerabilities. This paper presents new architecture of social network, which provides mechanisms for dividing data between more than one entity and combining independent data repositories in order to deliver one social network with clearly defined interfaces used to connect new data sources.

Middleware non-repudiation service for the data warehouse

Księżopolski B., Kotulski Z.

Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica

2010

Vol. 10, no. 1

131--144

Nowadays, storing the information is fundamental for the correct functioning of any organization. The critical factor is to guarantee the security of the stored data. In the traditional database systems the security requirements are limited to confidentiality, integrity, availability of the data and user authorization. The criticality of the database system and data repositories for modern business with the new requirements of law and governments, makes the development of new system architecture necessary which ensures sophisticated set of security services. In this paper we propose the database architecture that ensures the non-repudiation of the user queries and data warehouse actions. These security services are accomplished by means of the middleware layer in the data warehouse architecture.