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About

About

In 2009 I received M.SC degree in Network and Information Systems Engineering from Faculty of Sciences of the University of Porto. Since 2009 I am a researcher in Center for Research in Advanced Computing Systems (CRACS-INESC TEC). My research interest include entity identification, data disambiguation, matching algorithms, data mining, information retrieval, web technologies and web design. Currently I work on project Authenticus, software platform that automatically associates publication authors to known researchers and corresponding publication records to Portuguese institutions.

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Details

Details

003
Publications

2023

On the Performance of Secure Sharing of Classified Threat Intelligence between Multiple Entities

Authors
Fernandes, R; Bugla, S; Pinto, P; Pinto, A;

Publication
SENSORS

Abstract
The sharing of cyberthreat information within a community or group of entities is possible due to solutions such as the Malware Information Sharing Platform (MISP). However, the MISP was considered limited if its information was deemed as classified or shared only for a given period of time. A solution using searchable encryption techniques that better control the sharing of information was previously proposed by the same authors. This paper describes a prototype implementation for two key functionalities of the previous solution, considering multiple entities sharing information with each other: the symmetric key generation of a sharing group and the functionality to update a shared index. Moreover, these functionalities are evaluated regarding their performance, and enhancements are proposed to improve the performance of the implementation regarding its execution time. As the main result, the duration of the update process was shortened from around 2922 s to around 302 s, when considering a shared index with 100,000 elements. From the security analysis performed, the implementation can be considered secure, thus confirming the secrecy of the exchanged nonces. The limitations of the current implementation are depicted, and future work is pointed out.

2022

Inbreeding and research collaborations in Portuguese higher education

Authors
Tavares, O; Sin, C; Sa, C; Bugla, S; Amaral, A;

Publication
HIGHER EDUCATION QUARTERLY

Abstract