Applying security as a lifecycle practice is becoming increasingly important to combat targeted attacks in safetycritical systems. Among others there are two significant challenges in this area: (1) the need for models that can characterize a realistic system in the absence of an implementation and (2) an automated way to associate attack vector information; that is, historical data, to such system models. We propose the cybersecurity body of knowledge (CYBOK), which takes in sufficiently characteristic models of systems and acts as a search engine for potential attack vectors. CYBOK is fundamentally an algorithmic approach to vulnerability exploration, which is a significant extension to the body of knowledge it builds upon. By using CYBOK, security analysts and system designers can work together to assess the overall security posture of systems early in their lifecycle, during major design decisions and before final product designs. Consequently, assisting in applying security earlier and throughout the systems lifecycle.Index Terms-Cyber-physical systems, security, safety, modelbased engineering. arXiv:1909.02923v1 [eess.SY]
Objective: Theory suggests that self-conscious emotions (guilt and shame) may play a role in the development/maintenance of posttraumatic stress. Propensities to experience these emotions (i.e., proneness) may confer risk for posttraumatic stress, while difficulties tolerating or coping with them (i.e., aversion) may maintain or exacerbate symptoms. However, no research to date has examined the importance of guilt aversion or shame aversion in posttraumatic stress. Method: A total of 336 participants provided open-ended information on their experience of potentially traumatic events; a team of trained raters determined that a final sample of 186 participants had a clinically significant history of trauma. These participants completed measures of posttraumatic stress, along with measures of proneness for and aversion to both guilt and shame. Negative affect and experiential avoidance were assessed as covariates. Results: Zero-order correlations indicated that guilt-proneness and guilt aversion were not associated with posttraumatic stress. By contrast, shame-proneness was associated with posttraumatic stress over and above trait negative affect and experiential avoidance. Moreover, a significant interaction revealed that shame-proneness was only associated with posttraumatic stress when shame aversion was high. Conclusions: Results suggest that people high in shame-proneness, and therefore likely to experience shame in response to traumatic events, may experience greater posttraumatic stress if they are shame averse. If this is the case, addressing shame directly and teaching better skills for regulating it may be an important treatment goal for some individuals with posttraumatic stress.
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