The Experts below are selected from a list of 119073 Experts worldwide ranked by ideXlab platform
Parisa Haghani - One of the best experts on this subject based on the ideXlab platform.
-
cyber physical Security metric inference in smart grid critical infrastructures based on system administrators responsive behavior
Computers & Security, 2013Co-Authors: Saman Zonouz, Parisa HaghaniAbstract:To protect complex power-grid control networks, efficient Security assessment techniques are required. However, efficiently making sure that calculated Security measures match the expert knowledge is a challenging endeavor. In this paper, we present EliMet, a framework that combines information from different sources and estimates the extent to which a control network meets its Security Objective. Initially, EliMet passively observes system operators' online reactive behavior against Security incidents, and accordingly refines the calculated Security measure values. To make the values comply with the expert knowledge, EliMet actively queries operators regarding those states for which sufficient information was not gained during the passive observation. Finally, EliMet makes use of the estimated Security measure values for predictive situational awareness by ranking potential cyber-physical contingencies that the Security administrators should plan for upfront. Our experimental results show that EliMet can optimally make use of prior knowledge as well as automated inference techniques to minimize human involvement and efficiently deduce the expert knowledge regarding individual states of that particular system.
-
elimet Security metric elicitation in power grid critical infrastructures by observing system administrators responsive behavior
Dependable Systems and Networks, 2012Co-Authors: Saman Zonouz, Amir Houmansadr, Parisa HaghaniAbstract:To protect complex power-grid control networks, efficient Security assessment techniques are required. However, efficiently making sure that calculated Security measures match the expert knowledge is a challenging endeavor. In this paper, we present EliMet, a framework that combines information from different sources and estimates the extent to which a control network meets its Security Objective. Initially, during an offline phase, a state-based model of the network is generated, and Security-level of each state is measured using a generic and easy-to-compute metric. EliMet then passively observes system operators' online reactive behavior against Security incidents, and accordingly refines the calculated Security measure values. Finally, to make the values comply with the expert knowledge, EliMet actively queries operators regarding those states for which sufficient information was not gained during the passive observation. Our experimental results show that EliMet can optimally make use of prior knowledge as well as automated inference techniques to minimize human involvement and efficiently deduce the expert knowledge regarding individual states of that particular system.
Saman Zonouz - One of the best experts on this subject based on the ideXlab platform.
-
cyber physical Security metric inference in smart grid critical infrastructures based on system administrators responsive behavior
Computers & Security, 2013Co-Authors: Saman Zonouz, Parisa HaghaniAbstract:To protect complex power-grid control networks, efficient Security assessment techniques are required. However, efficiently making sure that calculated Security measures match the expert knowledge is a challenging endeavor. In this paper, we present EliMet, a framework that combines information from different sources and estimates the extent to which a control network meets its Security Objective. Initially, EliMet passively observes system operators' online reactive behavior against Security incidents, and accordingly refines the calculated Security measure values. To make the values comply with the expert knowledge, EliMet actively queries operators regarding those states for which sufficient information was not gained during the passive observation. Finally, EliMet makes use of the estimated Security measure values for predictive situational awareness by ranking potential cyber-physical contingencies that the Security administrators should plan for upfront. Our experimental results show that EliMet can optimally make use of prior knowledge as well as automated inference techniques to minimize human involvement and efficiently deduce the expert knowledge regarding individual states of that particular system.
-
elimet Security metric elicitation in power grid critical infrastructures by observing system administrators responsive behavior
Dependable Systems and Networks, 2012Co-Authors: Saman Zonouz, Amir Houmansadr, Parisa HaghaniAbstract:To protect complex power-grid control networks, efficient Security assessment techniques are required. However, efficiently making sure that calculated Security measures match the expert knowledge is a challenging endeavor. In this paper, we present EliMet, a framework that combines information from different sources and estimates the extent to which a control network meets its Security Objective. Initially, during an offline phase, a state-based model of the network is generated, and Security-level of each state is measured using a generic and easy-to-compute metric. EliMet then passively observes system operators' online reactive behavior against Security incidents, and accordingly refines the calculated Security measure values. Finally, to make the values comply with the expert knowledge, EliMet actively queries operators regarding those states for which sufficient information was not gained during the passive observation. Our experimental results show that EliMet can optimally make use of prior knowledge as well as automated inference techniques to minimize human involvement and efficiently deduce the expert knowledge regarding individual states of that particular system.
Zurlini Giovanni - One of the best experts on this subject based on the ideXlab platform.
-
mapping the environmental risk of a tourist harbor in order to foster environmental Security Objective vs subjective assessments
Marine Pollution Bulletin, 2010Co-Authors: Petrosillo Irene, Vassallo Paolo, Valente Donatella, Mensa Jean Alberto, Fabiano Mauro, Zurlini GiovanniAbstract:A new definition of environmental Security gives equal importance to the Objective and subjective assessments of environmental risk. In this framework, the management of tourist harbors has to take into account managers’ perceptions. The subject of the present study is a tourist harbor in southern Italy where six different managers are present. This paper aims to assess subjectively and Objectively the environmental risks associated with the harbor, and to compare the results to provide estimates of environmental Security. Hereby managers have been interviewed and a simple model is used for making preliminary assessment of environmental risks. The comparison of the results highlighted a common mismatch between risk perception and risk assessment. We demonstrated that the old part of the harbor is less secure than the new part. In addition, one specific manager representing a public authority showed a leading role in ensuring the environmental Security of the whole harbor.
Mensa Jean Alberto - One of the best experts on this subject based on the ideXlab platform.
-
mapping the environmental risk of a tourist harbor in order to foster environmental Security Objective vs subjective assessments
Marine Pollution Bulletin, 2010Co-Authors: Petrosillo Irene, Vassallo Paolo, Valente Donatella, Mensa Jean Alberto, Fabiano Mauro, Zurlini GiovanniAbstract:A new definition of environmental Security gives equal importance to the Objective and subjective assessments of environmental risk. In this framework, the management of tourist harbors has to take into account managers’ perceptions. The subject of the present study is a tourist harbor in southern Italy where six different managers are present. This paper aims to assess subjectively and Objectively the environmental risks associated with the harbor, and to compare the results to provide estimates of environmental Security. Hereby managers have been interviewed and a simple model is used for making preliminary assessment of environmental risks. The comparison of the results highlighted a common mismatch between risk perception and risk assessment. We demonstrated that the old part of the harbor is less secure than the new part. In addition, one specific manager representing a public authority showed a leading role in ensuring the environmental Security of the whole harbor.
Petrosillo Irene - One of the best experts on this subject based on the ideXlab platform.
-
mapping the environmental risk of a tourist harbor in order to foster environmental Security Objective vs subjective assessments
Marine Pollution Bulletin, 2010Co-Authors: Petrosillo Irene, Vassallo Paolo, Valente Donatella, Mensa Jean Alberto, Fabiano Mauro, Zurlini GiovanniAbstract:A new definition of environmental Security gives equal importance to the Objective and subjective assessments of environmental risk. In this framework, the management of tourist harbors has to take into account managers’ perceptions. The subject of the present study is a tourist harbor in southern Italy where six different managers are present. This paper aims to assess subjectively and Objectively the environmental risks associated with the harbor, and to compare the results to provide estimates of environmental Security. Hereby managers have been interviewed and a simple model is used for making preliminary assessment of environmental risks. The comparison of the results highlighted a common mismatch between risk perception and risk assessment. We demonstrated that the old part of the harbor is less secure than the new part. In addition, one specific manager representing a public authority showed a leading role in ensuring the environmental Security of the whole harbor.
