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A
J. A. Onieva, R. Rios, and B. Palenciano, "Análisis y Desarrollo de un Canal Encubierto en una Red de Sensores",
XIII Reunión Española sobre Criptología y Seguridad de la Información (RECSI 2014), Universidad de Alicante, pp. 333-338, 09/2014. More..

Abstract

Continuamente aparecen nuevos estudios así como nuevos desarrollos de canales encubiertos. Como veremos, existen más de cien diseños distintos para redes de ordenadores, pero no hemos encontrado en la literatura ningún análisis, diseño e implementación de canales encubiertos sobre redes de sensores. En este artículo presentamos los resultados del diseño e implementación de un canal multitasa basado en los tiempos de monitorización sobre una red de sensores. En este proceso se han establecido las principales propiedades necesarias y, en base a ellas, se desarrolla e implementa el canal encubierto. Se describe el proceso de desarrollo y se analiza su detectabilidad.

PDF icon onieva2014.pdf (230.88 KB)
C
R. Rios, J. A. Onieva, and J. Lopez, "Covert Communications through Network Configuration Messages",
Computers & Security, vol. 39, Part A, Elsevier, pp. 34 - 46, Nov 2013. DOI (I.F.: 1.172)More..

Abstract

Covert channels are a form of hidden communication that may violate the integrity of systems. Since their birth in Multi-Level Security systems in the early 70’s they have evolved considerably, such that new solutions have appeared for computer networks mainly due to vague protocols specifications. In this paper we concentrate on short-range covert channels and analyze the opportunities of concealing data in various extensively used protocols today. From this analysis we observe several features that can be effectively exploited for subliminal data transmission in the Dynamic Host Configuration Protocol (DHCP). The result is a proof-of-concept implementation, HIDE\_DHCP, which integrates three different covert channels each of which accommodate to different stealthiness and capacity requirements. Finally, we provide a theoretical and experimental analysis of this tool in terms of its reliability, capacity, and detectability.

Impact Factor: 1.172
Journal Citation Reports® Science Edition (Thomson Reuters, 2013)

PDF icon rios2013a.pdf (565.05 KB)
J. E. Rubio, C. Alcaraz, R. Roman, and J. Lopez, "Current Cyber-Defense Trends in Industrial Control Systems",
Computers & Security Journal, vol. 87, Elsevier, 11/2019. DOI (I.F.: 3.579)More..

Abstract

Advanced Persistent Threats (APTs) have become a serious hazard for any critical infrastructure, as a single solution to protect all industrial assets from these complex attacks does not exist. It is then essential to understand what are the defense mechanisms that can be used as a first line of defense. For this purpose, this article will firstly study the spectrum of attack vectors that APTs can use against existing and novel elements of an industrial ecosystem. Afterwards, this article will provide an analysis of the evolution and applicability of Intrusion Detection Systems (IDS) that have been proposed in both the industry and academia.

Impact Factor: 3.579
Journal Citation Reports® Science Edition (Thomson Reuters, 2019)

PDF icon rub2019cose.pdf (190.71 KB)