| 1. |
- Abbas, Muhammad, et al.
(författare)
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Requirements dependencies-based test case prioritization for extra-functional properties
- 2019
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Ingår i: Proceedings - 2019 IEEE 12th International Conference on Software Testing, Verification and Validation Workshops, ICSTW 2019. - : Institute of Electrical and Electronics Engineers Inc.. - 9781728108889 ; , s. 159-163
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Konferensbidrag (refereegranskat)abstract
- The use of requirements' information in testing is a well-recognized practice in the software development life cycle. Literature reveals that existing tests prioritization and selection approaches neglected vital factors affecting tests priorities, like interdependencies between requirement specifications. We believe that models may play a positive role in specifying these inter-dependencies and prioritizing tests based on these inter-dependencies. However, till date, few studies can be found that make use of requirements inter-dependencies for test case prioritization. This paper uses a meta-model to aid modeling requirements, their related tests, and inter-dependencies between them. The instance of this meta-model is then processed by our modified PageRank algorithm to prioritize the requirements. The requirement priorities are then propagated to related test cases in the test model and test cases are selected based on coverage of extra-functional properties. We have demonstrated the applicability of our proposed approach on a small example case.
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| 2. |
- Hammad, Muhammad, et al.
(författare)
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Risk Management in Agile Software Development: A Survey
- 2019
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Ingår i: Proceedings - 2019 International Conference on Frontiers of Information Technology, FIT 2019. - 9781728166254 ; , s. 162-166
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Konferensbidrag (refereegranskat)abstract
- In agile software development, some of the formal project management activities are neglected due to heavy documentation and planning. Agile methodologies usually focus on rapid development over hefty documentation which is contrary to the nature of the risk management process. Literature studies show agile methods are used for the development safety critical systems as well. For that ignoring risk management process is inevitable. This intrigued us to explore more on the risk management practices followed in agile methods following industry. To further the investigations on industrial practices regarding risk management, in this paper we explore on (i) the risks faced by the agile practitioners, and (ii) the mitigation strategies used. For this, we conducted an online survey with 54 agile practitioners. The results showed that the project deadlines and varying requirements are the two most commonly faced risks by the practitioners. Furthermore, the results also revealed that risk management strategies are being followed to some extent, but usually in a non-systematic way.
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| 3. |
- Zahid, Maryam, 1992-, et al.
(författare)
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Security Risk Mitigation of Cyber Physical Systems: A Case Study of a Flight Simulator
- 2019
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Ingår i: Database and Expert Systems Applications. - Cham : Springer. - 9783030276836 - 9783030276843 ; , s. 129-138
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Konferensbidrag (refereegranskat)abstract
- Avionics has seen a greatest shift in technology over the last two decades. The severity of the consequences resulting from a lack of risk management in avionics can be seen from recent incidents of unmanned aerial vehicles being hacked or in the hacking of vendor-controlled systems installed in commercial aircrafts. Over a million incidents related to security breaches at cyber layer have been recorded over the last decade, among which 350,000 cyber-attacks alone have taken place in the year 2018. Unfortunately, only a limited set of studies have been conducted on security risk management, particularly specific to avionics. In this article, we aim to identify, analyze and mitigate the security risks of 6 Degree of Freedom Flight Simulator. As a result, we identify 8 risks of level 3–4 as per the IEC 61508 standard. Further analysis of the identified risks yields in another 34 risks. We then mitigate the severity of the identified risks from level 4 to level 2 as per the IEC 61508 standard. The cryptosystem used for risk mitigation performed relatively faster as compared to some of the most recently proposed encryption schemes.
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