Guidelines for a job role based approach for Phishing awareness in an academic Institution
- Authors: Mahonga,Sandisiwe
- Date: 2021-12
- Subjects: Identity theft -- South Africa , Computer networks --Security measures
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55855 , vital:54394
- Description: Phishing attacks have become a perpetual threat to organisations and internet users in general. Phishing websites and emails impersonating well-known entities are launched frequently, with the intent to trick unsuspecting employees to give out sensitive information such as login details to acquire access to corporate networks. Various solutions have been developed to combat Phishing emails from reaching employees and internet users. However, security experts and Phishing attackers are in a race as Phishing attacks are also refined as solutions are developed. Thus, this raises a critical need for security awareness. Reports and Phishing studies have noted that Phishing attacks targeted towards specific job roles have been on the rise. Even though research studies and industry reports provided by organisations dedicated to information security have taken note of this phenomenon, not much guidance, recommendations or guidelines are provided on how Phishing awareness can be provided for the job roles that are most vulnerable to Phishing attacks. Therefore, the problem identified within this research is that there is a need for guidelines for a job role based approach for Phishing awareness. The primary research objective of this study, therefore, is to develop guidelines to aid towards a job role based approach for Phishing awareness. In order to meet the primary research objective, secondary research objectives were defined and met, namely; To determine the current state of Phishing trends facing organisations in relation to the job role of employees; to determine the level of Phishing awareness employees have; to identify security awareness elements from security awareness standards, best practices and frameworks; to integrate the identified security awareness elements from standards, best practices and frameworks including themes identified from the questionnaire results to formulate the proposed guidelines for a Phishing awareness approach that is relevant for the job role of employees in order to the formulate guidelines. 5 Mixed methods were used to achieve this study’s research objectives. The research methods used included a literature review which was used to define and provide an indepth discussion relating to the domain in which this study is contained, namely: Social engineering, Phishing and information security awareness and training. Furthermore, a survey which took the form of a questionnaire, was used ascertain the level of Phishing awareness amongst employees within an academic institution in South Africa. Argumentation was used to argue towards the proposed guidelines. Finally, an elite interview was conducted, in the form of a questionnaire, to evaluate the proposed guidelines. It is envisaged that the guidelines proposed for a job role Phishing awareness approach could assist organisations to equip employees in job roles that are vulnerable Phishing attacks with adequate awareness and training. , Thesis (MIT) -- Faculty of Engineering, the Built Environment and Information Technology, School of Information and Communication Technology, 2021
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- Date Issued: 2021-12
Ultra-high precision machining of rapidly solidified aluminium (RSA) alloys for optics
- Authors: Odedeyi, Peter Babatunde
- Date: 2021-12
- Subjects: Mechatronics Surface roughness -- Measurement
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/55921 , vital:54400
- Description: The advancement of ultra-precision is one of the most adaptable machining processes in the manufacturing of very complex and high-quality surface structures for optics, industrial, medical, aerospace and communication applications. Studies have shown that single-point diamond turning has an outstanding ability to machine high-quality optical components at a nanometric scale. However, in a responsive cutting process, the nanometric machinability of these optical components can easily be affected by several factors. The call for increasing needs of optical systems has recently led to the development of newly modified aluminium grades of non-ferrous alloys characterized by finer microstructures, defined mechanical and physical properties. To date, there has been a lack of sufficient research into these new aluminium alloys. In modern ultra-precision machining, the high demands for smart and inexpensive cutting tools are becoming more relevant in recent precision machines. In monitoring and predicting high-quality surface, cutting forces in single point diamond turning are believed to be as critical as other machining processes due to their potential effects on the quality of surface roughness. Undermining such an important factor is a compromise between the machining process's efficiency and the increased cost of production. Therefore, a comprehensive scientific understanding of the Nano-cutting mechanics is critical, particularly on modelling and analysis of cutting force, surface roughness, chip vii formation, acoustic emission, material removal rates, and molecular dynamic simulation of the rapidly solidified aluminium alloys to bridge the gap between fundamentals and industrial-scale application. The study is divided into three essential sections. First, the development of a force sensor. Secondly, investigation of the effect of cutting parameters (i.e., cutting speed, feed rate, and cutting depth) on cutting force, acoustic emission (AE), material removal rate (MRR), chip formation, Nose radius, and surface roughness (Ra), which play a leading role in the determination of machine productivity and efficiency of single-point diamond turning of rapidly solidified aluminium alloys. Thirdly, a 3-D molecular dynamic (MD) simulation of RSA 6061 is also carried out to further understand the nanometric mechanism and characterization of the alloy. The experiment was mainly conducted using Precitech Nanoform ultra-grind 250 lathe machines on three different advanced optical aluminium alloys materials; these are RSA 443, RSA 905, and RSA 6061. , Thesis (PhD) -- Faculty of Engineering, the Built Environment and Information Technology, School of Engineering, 2021
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- Date Issued: 2021-12