An Experimental Testbed and Methodology for Security Analysis of SCADA Systems

In this report, we detail the development of an experimental testbed dedicated to the security analysis of process control networks (SCADA) employed in industrial systems. The testbed is built on real hardware controllers and simulated physical processes which makes it suitable for laboratory environments. Its process-level modularity makes it easy to configure and develop multiple networked control scenarios. We designed and implemented a variety of networked process control systems using the PROFINET protocol at their communication layer. Using the developed experimental processes, we elaborated a methodology to infer a discrete model of the running controlled system through network traffic observation and process mining techniques. Secondly, we carried data manipulations on PROFINET messages to identify their impact on the controlled process behaviour. We evaluated our approach by comparing the inferred models with the designed baseline models

Antitumor Effect of Inula viscosa Extracts on DMBA-Induced Skin Carcinoma Are Mediated by Proteasome Inhibition

The aim of this work is to evaluate the antitumor effect mediated by the proteasome inhibitors of Inula viscosa extracts on skin carcinogenesis. Female Swiss albino mice were divided into five groups depending on the combination of skin cancer-inducing 7,12-dimethylbenz(a)anthracene (DMBA) and extract of Inula viscosa treatments. Histology of the affected skin and measurement of proteasome activity were performed to demonstrate the effect of Inula viscosa on mice. The identification of the molecules responsible for this inhibitory activity was carried out through the docking studies. The results showed that Inula viscosa extracts inhibit the development of papilloma in mice. Therefore, the best chemopreventive action of Inula viscosa was observed on mice in which extract treatment was performed before and after the induction of skin carcinogenesis. It was revealed that the ingestion of extracts Inula viscosa delays the formation of skin papillomas in animals and simultaneously decreases the size and number of papillomas, which is also reflected on the skin histology of the mice treated. Structure–activity relationship information obtained from component of Inula viscosa particularly tomentosin, inuviscolide, and isocosticacid demonstrated that distinct bonding modes in β1, β2, and β5 subunits determine its selectivity and potent inhibition for β5 subunit