Digital forensic model for computer networks
- Authors: Sanyamahwe, Tendai
- Date: 2011
- Subjects: Computer crimes -- Investigation , Evidence, Criminal , Computer networks -- Security measures , Electronic evidence , Forensic sciences , Internet -- Security measures
- Language: English
- Type: Thesis , Masters , MCom (Information Systems)
- Identifier: vital:11127 , http://hdl.handle.net/10353/d1000968 , Computer crimes -- Investigation , Evidence, Criminal , Computer networks -- Security measures , Electronic evidence , Forensic sciences , Internet -- Security measures
- Description: The Internet has become important since information is now stored in digital form and is transported both within and between organisations in large amounts through computer networks. Nevertheless, there are those individuals or groups of people who utilise the Internet to harm other businesses because they can remain relatively anonymous. To prosecute such criminals, forensic practitioners have to follow a well-defined procedure to convict responsible cyber-criminals in a court of law. Log files provide significant digital evidence in computer networks when tracing cyber-criminals. Network log mining is an evolution of typical digital forensics utilising evidence from network devices such as firewalls, switches and routers. Network log mining is a process supported by presiding South African laws such as the Computer Evidence Act, 57 of 1983; the Electronic Communications and Transactions (ECT) Act, 25 of 2002; and the Electronic Communications Act, 36 of 2005. Nevertheless, international laws and regulations supporting network log mining include the Sarbanes-Oxley Act; the Foreign Corrupt Practices Act (FCPA) and the Bribery Act of the USA. A digital forensic model for computer networks focusing on network log mining has been developed based on the literature reviewed and critical thought. The development of the model followed the Design Science methodology. However, this research project argues that there are some important aspects which are not fully addressed by South African presiding legislation supporting digital forensic investigations. With that in mind, this research project proposes some Forensic Investigation Precautions. These precautions were developed as part of the proposed model. The Diffusion of Innovations (DOI) Theory is the framework underpinning the development of the model and how it can be assimilated into the community. The model was sent to IT experts for validation and this provided the qualitative element and the primary data of this research project. From these experts, this study found out that the proposed model is very unique, very comprehensive and has added new knowledge into the field of Information Technology. Also, a paper was written out of this research project.
- Full Text:
- Date Issued: 2011
- Authors: Sanyamahwe, Tendai
- Date: 2011
- Subjects: Computer crimes -- Investigation , Evidence, Criminal , Computer networks -- Security measures , Electronic evidence , Forensic sciences , Internet -- Security measures
- Language: English
- Type: Thesis , Masters , MCom (Information Systems)
- Identifier: vital:11127 , http://hdl.handle.net/10353/d1000968 , Computer crimes -- Investigation , Evidence, Criminal , Computer networks -- Security measures , Electronic evidence , Forensic sciences , Internet -- Security measures
- Description: The Internet has become important since information is now stored in digital form and is transported both within and between organisations in large amounts through computer networks. Nevertheless, there are those individuals or groups of people who utilise the Internet to harm other businesses because they can remain relatively anonymous. To prosecute such criminals, forensic practitioners have to follow a well-defined procedure to convict responsible cyber-criminals in a court of law. Log files provide significant digital evidence in computer networks when tracing cyber-criminals. Network log mining is an evolution of typical digital forensics utilising evidence from network devices such as firewalls, switches and routers. Network log mining is a process supported by presiding South African laws such as the Computer Evidence Act, 57 of 1983; the Electronic Communications and Transactions (ECT) Act, 25 of 2002; and the Electronic Communications Act, 36 of 2005. Nevertheless, international laws and regulations supporting network log mining include the Sarbanes-Oxley Act; the Foreign Corrupt Practices Act (FCPA) and the Bribery Act of the USA. A digital forensic model for computer networks focusing on network log mining has been developed based on the literature reviewed and critical thought. The development of the model followed the Design Science methodology. However, this research project argues that there are some important aspects which are not fully addressed by South African presiding legislation supporting digital forensic investigations. With that in mind, this research project proposes some Forensic Investigation Precautions. These precautions were developed as part of the proposed model. The Diffusion of Innovations (DOI) Theory is the framework underpinning the development of the model and how it can be assimilated into the community. The model was sent to IT experts for validation and this provided the qualitative element and the primary data of this research project. From these experts, this study found out that the proposed model is very unique, very comprehensive and has added new knowledge into the field of Information Technology. Also, a paper was written out of this research project.
- Full Text:
- Date Issued: 2011
Towards an information security awareness process for engineering SMEs in emerging economies
- Authors: Gundu, Tapiwa
- Date: 2013
- Subjects: Computer security -- South Africa , Information technology -- South Africa , Computer networks -- Security measures -- South Africa , Information resources management -- South Africa , Small business -- South Africa , Engineering firms -- South Africa , Confidential communications -- South Africa , Information Security Awareness , Information Security Behaviour , Information Security Training
- Language: English
- Type: Thesis , Masters , MCom (Information Systems)
- Identifier: vital:11138 , http://hdl.handle.net/10353/d1007179 , Computer security -- South Africa , Information technology -- South Africa , Computer networks -- Security measures -- South Africa , Information resources management -- South Africa , Small business -- South Africa , Engineering firms -- South Africa , Confidential communications -- South Africa , Information Security Awareness , Information Security Behaviour , Information Security Training
- Description: With most employees in Engineering Small and Medium Enterprises (SME) now having access to their own personal workstations, the need for information security management to safeguard against loss/alteration or theft of the firms’ important information has increased. These Engineering SMEs tend to be more concerned with vulnerabilities from external threats, although industry research suggests that a substantial proportion of security incidents originate from insiders within the firm. Hence, technical preventative measures such as antivirus software and firewalls are proving to solve only part of the problem as the employees controlling them lack adequate information security knowledge. This tends to expose a firm to risk and costly mistakes made by naïve/uninformed employees. This dissertation presents an information security awareness process that seeks to cultivate positive security behaviours using a behavioural intention model based on the Theory of Reasoned Action, Protection Motivation Theory and the Behaviourism Theory. The process and model have been refined and verified using expert review and tested through action research at an Engineering SME in South Africa. The main finding was information security levels of employees within the firm were low, but the proposed information security awareness process increased their knowledge thereby positively altering their behaviour.
- Full Text:
- Date Issued: 2013
- Authors: Gundu, Tapiwa
- Date: 2013
- Subjects: Computer security -- South Africa , Information technology -- South Africa , Computer networks -- Security measures -- South Africa , Information resources management -- South Africa , Small business -- South Africa , Engineering firms -- South Africa , Confidential communications -- South Africa , Information Security Awareness , Information Security Behaviour , Information Security Training
- Language: English
- Type: Thesis , Masters , MCom (Information Systems)
- Identifier: vital:11138 , http://hdl.handle.net/10353/d1007179 , Computer security -- South Africa , Information technology -- South Africa , Computer networks -- Security measures -- South Africa , Information resources management -- South Africa , Small business -- South Africa , Engineering firms -- South Africa , Confidential communications -- South Africa , Information Security Awareness , Information Security Behaviour , Information Security Training
- Description: With most employees in Engineering Small and Medium Enterprises (SME) now having access to their own personal workstations, the need for information security management to safeguard against loss/alteration or theft of the firms’ important information has increased. These Engineering SMEs tend to be more concerned with vulnerabilities from external threats, although industry research suggests that a substantial proportion of security incidents originate from insiders within the firm. Hence, technical preventative measures such as antivirus software and firewalls are proving to solve only part of the problem as the employees controlling them lack adequate information security knowledge. This tends to expose a firm to risk and costly mistakes made by naïve/uninformed employees. This dissertation presents an information security awareness process that seeks to cultivate positive security behaviours using a behavioural intention model based on the Theory of Reasoned Action, Protection Motivation Theory and the Behaviourism Theory. The process and model have been refined and verified using expert review and tested through action research at an Engineering SME in South Africa. The main finding was information security levels of employees within the firm were low, but the proposed information security awareness process increased their knowledge thereby positively altering their behaviour.
- Full Text:
- Date Issued: 2013
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