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Costa R.,VANTIS | Serrao C.,ISCTE IUL ADETTI IUL
Communications in Computer and Information Science | Year: 2015

New organizations wanting to surf the Cloud wave face one big challenge, which is how to evaluate how its business will be impacted. Currently, there is no mutually accepted methodology to allow the verification of this information, or to compare security between the organization’s systems before and after migrating their resources to a Cloud. In this paper the authors discuss the implications of assessing Cloud security and how to compare two different environment’s security in a way to provide enough resources for management to take decisions about migrating or not their systems to a remote datacenter. A practical method is proposed to assess and compare the organization system security before and after migration to a Cloud. © Springer International Publishing Switzerland 2015.


Dinis B.,ISCTE IUL ADETTI IUL | Serrao C.,ISCTE IUL ADETTI IUL
International Conference on Information Society, i-Society 2014 | Year: 2015

One of the first phases, and one of the most important ones, in a security assessment activity (either legitimate or not) consists in the information gathering about a specific target. Information gathering, also recognized as footprinting, is the process of collecting all accessible information about that specific target. In a security assessment, the importance of this phase is clamorous and involves the examination, collection and classification of large volumes of data from the target network. The Penetration Testing Execution Standard (PTES), although still in an early and definition stage, provides the description of the processes that are necessary to conduct penetration-testing assessments in a generic and integrated manner. The focus of this article consists in the analysis of the PTES and its recommendations on what concerns footprinting processes and to provide some contributions in terms of the practical applicability of the PTES recommendations. © 2014 Infonomics Society.


Reis J.,ISCTE IUL ADETTI IUL
ACM International Conference Proceeding Series | Year: 2014

Based on the previous and ongoing work of the development of GSG, an extensible expert system shell tool to support creative work involving shape computing with Shape Grammars, this paper shows an evolution and refinement of the system. A refined class structure and the line intersections types appropriate for matching shapes in the process of shape grammar rule application are presented. Operations for the algebras of shapes (which are essential in the mechanics of the application of rules in shape computing) are discussed, for both maximal and non maximal shapes. In particular, details and tests of the implementation of these operations for the maximal case are also shown. © 2014 ACM.


Serrao C.,ISCTE IUL ADETTI IUL | Gamito M.,ISCTE IUL ADETTI IUL
Advances in Intelligent Systems and Computing | Year: 2013

This article presents the development of a specific software system through the integration of several open source applications. This integration makes use of several synchronous Enterprise Application Integration (EAI) techniques that were grouped as a way to keep the applications the most independent possible. The integration process was conducted directly on the source code of the applications, making usage of open source applications as an asset. This article presents and approach that allows the development of new software solutions through the integration of several open source applications. © 2013 Springer-Verlag.


Reis J.,ISCTE IUL ADETTI IUL
Iberian Conference on Information Systems and Technologies, CISTI | Year: 2013

Shape Grammars are a formalism that allows to analyze and synthesize designs of visual languages and has been used to represent the knowledge behind the creative work of architects, designers and artists. This article describes GSG, a configurable and extensible expert system shell to support generic work with Shape Grammars. Key ideas, system architecture, technologies involved, some previously published work and present and future work are presented. © 2013 AISTI.


Reis J.,ISCTE IUL ADETTI IUL
ACM International Conference Proceeding Series | Year: 2013

This paper describes a configurable and extensible expert system shell tool to support creative work with Shape Grammars. Shape Grammars are a formalism that allows to analyze and synthesize designs of visual languages and has been used to represent the knowledge behind the creative work of architects, designers and artists. The main ideas, the computational architecture, the technologies involved and some previous work and present and future work are presented. © 2013 ACM.

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