Sökning: "computer security"

Visar resultat 1 - 5 av 261 avhandlingar innehållade orden computer security.

  1. 1. Modeling and Tuning Security from a Quality of Service Perspective

    Författare :Stefan Lindskog; Karlstads universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; network security; quality of service QoS ; tunable security; dependability; security service; data protection; security evaluation; Datavetenskap; Computer Science;

    Sammanfattning : Security has traditionally been thought of as a system or network attribute that was the result of the joint endeavors of the designer, maintainer and user, among others. Even though security can never reach a level of 100%, the aim has been to provide as much security as possible, given the boundary conditions in question. With the advent of, e.g. LÄS MER

  2. 2. Towards Measurable and Tunable Security

    Författare :Reine Lundin; Simone Fischer-Hubner; Stefan Lindskog; Viiveke Fåk; Karlstads universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; tunable security; security measures; metrics; entropy; guesswork; privacy; anonymity; selective encryption; Computer science; Datavetenskap; Datavetenskap; Computer Science;

    Sammanfattning : Many security services today only provides one security configuration at run-time, and cannot then utilize the trade-off between performance and security. In order to make use of this trade-off, tunable security services providing several security configurations that can be selected at run-time are needed. LÄS MER

  3. 3. Visualising Security through Computer Games : Investigating Game-Based Instruction in ICT Security:an Experimental Approach

    Författare :Kjell Näckros; Louise Yngström; Helen Armstrong; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; ICT Security; Education; Game-Based Instruction; GBI; Computer Games; Game-Based Learning; GBL; Nonlinear; Linear; Learning Styles; Holist; Serialist; Knowledge; Vital Security Functions; VSF; Informatics; computer and systems science; Informatik; data- och systemvetenskap;

    Sammanfattning : This thesis investigates whether learning materials in the form of computer games can increase knowledge and comprehension in the area of ICT security.Through a series of experiments carried out in Sweden between the years 2000 and 2003, investigating theoretical knowledge as well as practical knowledge gained through a single-user computer game, data were collected and subjected to quantitative and qualitative analyses. LÄS MER

  4. 4. Observations on Operating System Security Vulnerabilities

    Författare :Stefan Lindskog; Karlstads universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; computer security; operating system; vulnerability; intrusion; experiment; modeling; analysis; Datavetenskap; Computer Science;

    Sammanfattning : This thesis presents research on computer security vulnerabilities in general-purpose operating systems. The objective is to investigate intrusions in such systems in order to find and model the underlying generic weaknesses, i.e., weaknesses that would be applicable to many different systems. LÄS MER

  5. 5. Usable privacy for digital transactions : Exploring the usability aspects of three privacy enhancing mechanisms

    Författare :Julio Angulo; John Sören Pettersson; Simone Fischer-Hübner; Erik Wästlund; Karlstads universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Privacy-Enhancing Technologies; usability; usable privacy; mental models; mobile devices; security; digital transactions; e-commerce; User Interfaces; Information Systems; Informatik;

    Sammanfattning : The amount of personal identifiable information that people distribute over different online services has grown rapidly and considerably over the last decades. This has led to increased probabilities for identity theft, profiling and linkability attacks, which can in turn not only result in a threat to people’s personal dignity, finances, and many other aspects of their lives, but also to societies in general. LÄS MER