This thesis describes the development of a prototype security hardened field device (such as a remote terminal unit) based on commodity hardware and implementing a previously developed security architecture. This security architecture has not been implemented in the past due to the difficulty of providing an operating system which meets the architecture's isolation requirements. Recent developments in both hardware and software have made such an operating system possible, opening the door to the implementation and development of this new security architecture in physical devices attached to supervisory control and data acquisition (SCADA) systems. A prototype is developed using commodity hardware selected for similarity to existing industrial systems and making use of the new OKL4 operating system. Results of prototype development are promising, showing performance values which are adequate for a broad range for industrial applications.
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The issue of cyber-security has been wrongfully divided into many parts, each part addressed separately. The approach
to cyber-security needs to examine the function of all the issues working together as in the study of complex systems.
Discussion: There is currently no effective cyber-security paradigm. Crime, exploitation, and invasions of privacy are
increasing costing billions of dollars and have even started to bridge into the physical world with the destruction of
uranium enrichment centrifuges in Iran by the Stuxnet virus. There are a multitude of cyber security issues, but the most
important topics address how to define malicious actions in cyberspace, the inadequacy of the international community
to address these actions, and how active a role the private sector should play in the overall cyber-security effort. There is
no groundbreaking technology that will solve this problem despite much work by government agencies and corporate
entities. In fact, this effort has compounded the problem of cyber-security being examined in its parts when it should be
looked at as a whole. This is a distributed problem that needs a distributed answer, a systems solution that works as in
any well engineered system.
Conclusion: The ideal answers for the individual issues of defining cyber-attack, applicability of current international law,
and the proper role of the private sector does not produce the best answer for an adequate cyber-security paradigm as a
whole. A system of solutions that produces an answer that is greater than their parts needs to be pursued.
This book is an introduction for the reader into the wonderful world of embedded device hacking. The book focuses on the smart home controllers and teaches how to evaluate the security mechanisms provided by these controllers. The book uses Veralite Smart Home Controller as an example of depicting the methodology. The "Internet of Things" phenomenon has caught up with the home automation industry and this opens up the consumers using these smart home controllers to security issues that they never would have thought about earlier. The security issues introduced by these smart home controllers allows an attacker/burglar to control everything from an IP camera to door locks in the user's home. The aim of this book is to educate the modern day tech-savy consumers about the security issues that they need to be aware about when making choices about the smart home controllers that control pretty much everything in their homes. However, keep in mind this book is extremely technical in nature!!!
Distributed Denial of Service (DDoS) attack is one of the most disruptive attacks in computer networks. It utilizes legitimate requests from hundreds or thousands of computers to specific targets to occupy targets' bandwidth and deplete targets' resource. In this work, we have attempted to not only mitigate DDoS attacks but also identify the source of attacks even behind Network Address Translation (NAT). This is followed by remedial actions such as denying further access or informing them that they have participated in the attacks.
This report presents a new algorithm to prevent servers from DDoS attacks. This algorithm requires that network routers or gateways collaborate with each other in order to detect suspicious traffic. The algorithm initiates a peer-to-peer communication among network routers or gateways to increase the probability of detecting unwanted traffic. We derive mathematical proofs based on cryptographic concepts such as birthday attacks to estimate the rate of attacks generated and passed along the routers. This implementation is to prevent the attacker from sending spam traffic to the server which can lead to DDoS attacks. The effectiveness of our implementation is evidenced in our experimental results.