Trust-based Selfish Node Detection Mechanism using Beta Distribution in Wireless Sensor Network

Wireless sensor networks (WSNs) are placed in open environments for the collection of data and are vulnerable to external and internal attacks. The cryptographic mechanisms implemented so far, such as authorization and authentication, are used to restrict external sensor node attacks but cannot prevent internal node attacks. In order to evade internal attacks trust mechanisms are used. In trust mechanisms, firstly, the sensor nodes are monitored using the popular Watchdog mechanism. However, traditional trust models do not pay much attention to selective forwarding and consecutive packet dropping. Sometimes, sensitive data are dropped by internal attackers. This problem is addressed in our proposed model by detecting selective forwarding and consecutive failure of sending packets using the Beta probability density function model

Cyber resilience meta-modelling: The railway communication case study

Recent times have demonstrated how much the modern critical infrastructures (e.g., energy, essential services, people and goods transportation) depend from the global communication networks. However, in the current Cyber-Physical World convergence, sophisticated attacks to the cyber layer can provoke severe damages to both physical structures and the operations of infrastructure affecting not only its functionality and safety, but also triggering cascade effects in other systems because of the tight interdependence of the systems that characterises the modern society. Hence, critical infrastructure must integrate the current cyber-security approach based on risk avoidance with a broader perspective provided by the emerging cyber-resilience paradigm. Cyber resilience is aimed as a way absorb the consequences of these attacks and to recover the functionality quickly and safely through adaptation. Several high-level frameworks and conceptualisations have been proposed but a formal definition capable of translating cyber resilience into an operational tool for decision makers considering all aspects of such a multifaceted concept is still missing. To this end, the present paper aims at providing an operational formalisation for cyber resilience starting from the Cyber Resilience Ontology presented in a previous work using model-driven principles. A domain model is defined to cope with the different aspects and “resilience-assurance” processes that it can be valid in various application domains. In this respect, an application case based on critical transportation communications systems, namely the railway communication system, is provided to prove the feasibility of the proposed approach and to identify future improvements

From Social Data Mining to Forecasting Socio-Economic Crisis

Socio-economic data mining has a great potential in terms of gaining a better understanding of problems that our economy and society are facing, such as financial instability, shortages of resources, or conflicts. Without large-scale data mining, progress in these areas seems hard or impossible. Therefore, a suitable, distributed data mining infrastructure and research centers should be built in Europe. It also appears appropriate to build a network of Crisis Observatories. They can be imagined as laboratories devoted to the gathering and processing of enormous volumes of data on both natural systems such as the Earth and its ecosystem, as well as on human techno-socio-economic systems, so as to gain early warnings of impending events. Reality mining provides the chance to adapt more quickly and more accurately to changing situations. Further opportunities arise by individually customized services, which however should be provided in a privacy-respecting way. This requires the development of novel ICT (such as a self- organizing Web), but most likely new legal regulations and suitable institutions as well. As long as such regulations are lacking on a world-wide scale, it is in the public interest that scientists explore what can be done with the huge data available. Big data do have the potential to change or even threaten democratic societies. The same applies to sudden and large-scale failures of ICT systems. Therefore, dealing with data must be done with a large degree of responsibility and care. Self-interests of individuals, companies or institutions have limits, where the public interest is affected, and public interest is not a sufficient justification to violate human rights of individuals. Privacy is a high good, as confidentiality is, and damaging it would have serious side effects for society.Comment: 65 pages, 1 figure, Visioneer White Paper, see http://www.visioneer.ethz.c

Off and Online Journalism and Corruption

This book provides a new theoretical framework of determinants that interact together in five hierarchical levels to restrain or produce corruption. The theory suggests a multilevel analysis that tests hypotheses regarding the relations of journalism and corruption within each level and across levels in international comparative research designs. Corruption as the abuse of power for private gain is built into the journalistic, economic, political, and cultural structures of any society and is affected by its interaction within the international system. The important questions of how differences in corruption across countries can be explained or what makes it more or less in a particular society and how press freedom and social media contribute to the fight against corruption are still unanswered. This book represents a significant contribution on the way to answer these critical questions. It discusses a variety of journalism-corruption experiences that provide a wealth of results and analyses. The cases it examines extend from Cuba to Algeria, India, Saudi Arabia, Sub-Saharan African, Gulf Cooperation Countries, Arab World, and Japan. The primary contribution of this book is both theoretical and empirical. Its details as well as the general theoretical frameworks make it a useful book for scholars, academics, undergraduate and graduate students, journalists, and policy makers

Ideology and culture

This chapter evaluates the role of culture and ideology in relation to journalism. Journalists cannot ignore that they are not operating in a vacuum, immune to environmental influences. A “western” (or any ideological) approach to journalism is not a neutral norm to which others need to adhere. Journalists can keep themselves and each other in check by questioning the approach taken to a story and identifying the lens they employ. Secondly, diverse recruitment within media organisations is key, not just in terms of ethnic, gender or national backgrounds but also in terms of value profiles. There is no one Nation which holds the gold standard for journalism and can be used as a reference point for all others. In other words, there is no such thing as Greenwich Mean Time journalism

In the public interest or out of desperation? The experience of Australian whistleblowers reporting to accountability agencies

Whistleblower protection legislation in Australia has three objectives: (i) to facilitate the making of disclosures about public interest wrongdoing in government departments, (ii) to ensure such disclosures are properly dealt with, and (iii) to ensure the protection of whistleblowers. These objectives align with the three core purposes of accountability: reporting information, justification and debate, and the rectification of any wrongdoing. Using empirical data collected by a national research project, ‘Whistling While They Work’, this thesis analyses the experiences of whistleblowers who make their disclosures to external accountability agencies - auditors-general, ombudsmen, corruption and crime commissions and public sector standards. The whistleblowers in this study reported wrongdoing to their own departments, out of loyalty to their organisation and trusting that their managers shared their ethical values and commitment to integrity. Only when this trust was breached, did they make their disclosures to external accountability agencies in the hopes of achieving rectification of the wrongdoing and protection from reprisals. The focus of the analysis is on the extent to which accountability agencies are achieving the objectives of the legislation. The fundamental conclusion is that they are not. Resource constraints and problems with the legislation itself, particularly the ‘public interest’ threshold test, clearly contribute to agencies’ limited achievements. In large part, however, accountability agencies have failed to develop approaches to whistleblowing that take into account the needs and vulnerabilities of whistleblowers. Accountability agencies trust the ‘distributed integrity’ in government departments in the same way as they do for other areas of their work, for example, complaints from the general public. In doing so, they fail to use the many-faceted experience of whistleblowing to improve accountability. All too often, they simply confirm whistleblowers’ disappointment in the standards of ethics and accountability within the public sector

Accountability arrangements to combat corruption: Literature review

This review describes accountability arrangements to combat corruption in the infrastructure sector. The sustainability of the livelihoods of the poor in low- and middle-income countries is compromised by corruption in the delivery of infrastructure services. Such services include water supply, sanitation, drainage, the provision of access roads and paving, transport, solid waste management, street lighting and community buildings. For this reason, The Water, Engineering Development Centre, (WEDC) at Loughborough University in the UK is conducting research into anti-corruption initiatives in this area of infrastructure services delivery. This series of reports has been produced as part of a project entitled Accountability Arrangements to Combat Corruption, which was initially funded by the Department for International Development (DFID) of the British Government. The purpose of the work is to improve governance through the use of accountability arrangements to combat corruption in the delivery of infrastructure services. These findings, reviews, country case studies, case surveys and practical tools provide evidence of how anti-corruption initiatives in infrastructure delivery can contribute to the improvement of the lives of the urban poor. The main objective of the research is the analysis of corruption in infrastructure delivery. This includes a review of accountability initiatives in infrastructure delivery and the nature of the impact of greater accountability