Search results for "400"
showing 10 items of 1272 documents
Supporting Humanitarian Relief Distribution Decision-Making under Deep Uncertainty : A System Design Approach
2020
With respect to copyright, all the papers were excluded from the dissertation. Disasters threaten society with widespread destruction of infrastructure and livelihood. For their survival, affected inhabitants depend on immediate humanitarian assistance from diverse organizations. During quick responses, humanitarian decision- makers (HDMs) act rapidly to distribute necessary relief goods, despite the deep, prevailing uncertainty that arises from scarce, conflicting, and uncertain information. To support HDMs in humanitarian relief distribution (HRD) decision-making, humanitarian logistics (HL) researchers have developed various mathematical models. These models are, however, specific to dis…
Enhancing the Benefits Management Model for Complex eHealth Efforts
2020
This thesis suggests five ways to improve BM in complex eHealth efforts. First, the concept of BR was defined to clarify the existing conflation of the BR and BM concepts. Second, an extended and enhanced BMM was developed that incorporated the BM context, levels of complexity for both organizational and interorganizational initiatives, and the critical aspects of learning and governance. Third, three propositions concerning learning and governance in BM were suggested based on the new model, which can be used to inform future BM studies and guide empirical work. Fourth, the propositions were further translated into a six-question checklist to stimulate learning from the BM process itself. …
The genesis of data-driven decision-making in the world of soccer tactics : deciphering the potential of big data
2021
Master's thesis in Information systems (IS501) Arguably, soccer is a more fluid sport than other popular sports such as baseball, American football, and cricket, which explicitly require more discrete ‘plays.’ Moreover, with twenty-two players always committed, it has more moving elements than basketball or ice hockey. From a mathematical perspective, this signifies that soccer has more degrees of freedom than these other sports, making it difficult to evaluate the game using one or a small number of metrics. Over time, this challenge has been made exceedingly more difficult within the soccer community. The availability of data has increased much more rapidly than the scientific advancement…
Investigating Cloud Access Security Broker In A Healthcare Service : Creating A Cloud Access Security Broker (CASB) Discussion Frame-work For Evaluat…
2021
Master's thesis in Cyber security (IKT523) Covid-19 accentuated the importance of accessible services, causing a major increase in the adoption of cloud services for enterprises. Cloud computing is a new paradigm that promises significant benefits for organizations in healthcare services. However, cloud computing also transforms enterprise architectures and introduces new problems of information security. Decision-makers in a large healthcare service provider need to justify decisions on cloud adoption, but such a task is convoluted given the different views on cloud computing and the potential impact of cyberthreats on critical infrastructures. As a consequence, cloud security controls nee…
Blockchain for Attribute-Based Access Control : A flexible access control scheme with Permission Delegations
2021
Master's thesis in Cyber security (IKT523) Access Control (AC) is a fundamental aspect of modern technology infrastructure. While most primitive versions of AC use an Access Control List (ACL) to represent access, a more versatile variant called Attribute-Based Access Control (ABAC) has quickly become a popular approach to implementing AC due to its flexibility and scalability and enabling cross-domain access. This thesis proposes a Blockchain-based ABAC scheme with delegatable permission tokens through the use of Hyperledger Fabric and Java Web Tokens (JWT). Fabric is used to store various attribute and revocation transactions necessary in an ABAC system, while JWT’s purpose is to delegate…
Detecting Packed PE Files : Executable file analysis for the Windows operating system
2021
Master's thesis in Cyber security (IKT523) Malware authors invent new methods regularly to hide and obfuscate their code. One of these methods is known as packing. An entire program is hidden inside another executable program; however, the hidden program is usually encrypted or obfuscated such that antivirus software cannot detect its real intent without unpacking it. This thesis will look into common PE packers and describe the development of an application used to detect packed PE binaries using static analysis. This thesis is useful for reverse engineers and antivirus developers; it will give some insight into the world of packing binaries, compression methods, and encryption methods. Th…
Tuning Suricata Intrusion Detection System for High Performance on a Single Non-Uniform Memory Access Node
2021
Master's thesis in Cyber security (IKT523) The rapid increase in network capacity poses a challenge in detecting cyber attacks. Suricata is a modern intrusion detection system(IDS) used to monitor network traffic to detect cyberattacks. Telenor is monitoring considerable amounts of network traffic with IDS-servers, commonly referred to as sensors. Occasionally, the traffic load reaches a point where theIDS drops some of the incoming packets, termed packet loss. This is a serious problem, asit can lead to undetected threats. With this in mind, Telenor wants to find out if a lossless detection can be achieved by tuning Suricata for high performance. This can be accomplished by pinning dedicat…
Informasjonssikkerhetsstyring i norsk kommunesektor : En case studie
2021
Master's thesis in Information systems (IS501) Norske kommuner digitaliserer sine tjenester i stadig økende grad, samtidig som trusselbildet fra aktører med ondsinnede intensjoner øker. For å imøtekommedisse truslene og ivareta innbyggernes integritet finnes det ulike styringssystemer for informasjonssikkerhet som enten er anbefalte eller obligatoriske i norsk offentlig sektor. Digitaliseringsdirektoratet peker på at små og mellomstore kommuner har store utfordringer med å praktisere informasjonssikkerhetsstyring. Gjennom en kvalitativ metode, med16 semistrukturerte intervjuer i små og mellomstore kommuner i Norge, har vi forsøkt å finne årsaker til, og mulige løsninger på utfordringene kom…
Teachers’ awareness, knowledge and practice of information security in school
2020
Master's thesis in Information systems (IS501) We found that the teachers in our respondent schools lacked formal training on topics of information security. Most of them did not know what phishing, backdoors and keyloggers are, and many reused passwords across multiple sites. The teachers were also concerned about lacking the knowledge to properly teach their students about information security and netiquette. The principals did not consider information security to be a primary concernand the IT-department employees had varying knowledge of information security.Meanwhile the municipality has been focused on procuring hardware and softwarefor the teachers and students, and ensuring proper u…
Privacy-enhanced network monitoring
2013
Doktorgradsavhandling i informasjons- og kommunikasjonsteknologi, Universitetet i Agder, 2014 This PhD dissertation investigates two necessary means that are required for building privacy-enhanced network monitoring systems: a policy-based privacy or confidentiality enforcement technology; and metrics measuring leakage of private or confidential information to verify and improve these policies. The privacy enforcement mechanism is based on fine-grained access control and reversible anonymisation of XML data to limit or control access to sensitive information from the monitoring systems. The metrics can be used to support a continuous improvement process, by quantifying leakages of private o…