Text in Afrikaans / Die aard en omvang van motorvoertuigdiefstal in Suid-Afrika, het die ondersoeker aangespoor om 'n studie van die verskynsel soos dit in die Pretoria-Sentraal polisiestasiegebied voorkom, te loods. Data wat uit die dokumentere studie van gebeure ingesamel is, is rekenkundig gekwantifiseer en het besondere misdaadpatrone wat betrekking het op motordiefstal aan die lig gebring. Dit het tot die formulering van 'n multidissiplinere misdaadvoorkomingsbestuursmodel bygedra. Vanwee die erns van die verskynsel en die ekonomiese implikasies wat dit meebring, moet daar op 'n voortdurende grondslag navorsing uitgevoer word ten einde metodes te verskaf om die omvang van motorvoertuigdiefstal te verminder. Die owerheid moet 'n belangrike rol speel in die oplossing van die probleem. / The nature and extent of motorvehicle theft in South Africa encouraged the researcher to pilot a study into the phenomenon as it manifests itself at the Pretoria-Central police station area. Data gathered, in a documentary study of events, has been arithmetically quantified and reveal particular crime patterns relating to motorcar theft. This contributed to the formulation of a multidisciplinary crime prevention management model. Due to the seriousness of the phenomenon and the economic implications it causes, in depth research needs to be undertaken on a continuous basis to establish means to reduce the extent of motorvehicle theft. The authorities should play an important role in resolving the problem. / Criminology and Security Science / M.A. (Kriminologie)

This work will offer sociological theory about deviance, positing that deviance is part of larger social processes. Specifically, it will examine the illicit arts and antiquities trade, arguing that networks of legitimate status-role positions facilitate illegitimate behaviors. This theoretical framework is developed out of the notion that deviant actions may be the result of a social economy, and not the result of individual or psychological concerns. The work will use an exploratory methodology and attempt to explain or answer several research questions. This is tested by using qualitative, open-source data describing the context and means of participation in the status-role positions. The intent is to highlight specific cases and explain how the alternative theory of deviance may be more suitable to explain this type of phenomena.

Telecommunication systems have evolved significantly and the recent convergence of telephony allows users to communicate through landlines, mobile phones and Voice over IP (VoIP) phones. Unfortunately this convergence has resulted in easy manipulation of caller identity, resulting in both VoIP spam and Caller ID spoofing. In this dissertation, we introduce the notion of effective identity which is a combination of mechanisms to (1) establish identity of the caller that is harder to manipulate, and (2) provide additional information about the caller. We first use effective identities to address the VoIP spam problem by proposing CallRank, a novel mechanism built around call duration and social network linkages to differentiate between a legitimate user and a spammer. To ensure that this mechanism is privacy preserving, we create a token framework that allows a user to prove the existence of a social network path between him and the user he is trying to initiate contact with, without actually revealing the path. We then look at the broader issue of determining identity across the entire telecommunication landscape to address Caller ID spoofing. Towards this, we develop PinDr0p, a technique to determine the provenance of a call - the source and the path taken by a call. In the absence of any verifiable metadata, provenance offers a means of uniquely identifying a call source. Finally, we use anomalies in timbre to develop London Calling, a mechanism to identify geography of a caller. Together, the contributions made in this dissertation create effective identities that can help address the new threats in a converged telecommunication infrastructure.

Text in Afrikaans / Die aard en omvang van motorvoertuigdiefstal in Suid-Afrika, het die ondersoeker aangespoor om 'n studie van die verskynsel soos dit in die Pretoria-Sentraal polisiestasiegebied voorkom, te loods. Data wat uit die dokumentere studie van gebeure ingesamel is, is rekenkundig gekwantifiseer en het besondere misdaadpatrone wat betrekking het op motordiefstal aan die lig gebring. Dit het tot die formulering van 'n multidissiplinere misdaadvoorkomingsbestuursmodel bygedra. Vanwee die erns van die verskynsel en die ekonomiese implikasies wat dit meebring, moet daar op 'n voortdurende grondslag navorsing uitgevoer word ten einde metodes te verskaf om die omvang van motorvoertuigdiefstal te verminder. Die owerheid moet 'n belangrike rol speel in die oplossing van die probleem. / The nature and extent of motorvehicle theft in South Africa encouraged the researcher to pilot a study into the phenomenon as it manifests itself at the Pretoria-Central police station area. Data gathered, in a documentary study of events, has been arithmetically quantified and reveal particular crime patterns relating to motorcar theft. This contributed to the formulation of a multidisciplinary crime prevention management model. Due to the seriousness of the phenomenon and the economic implications it causes, in depth research needs to be undertaken on a continuous basis to establish means to reduce the extent of motorvehicle theft. The authorities should play an important role in resolving the problem. / Criminology and Security Science / M.A. (Kriminologie)

Motor vehicle theft is the costliest property crime in the United States equaling billions of dollars in losses each year. Despite law enforcement success in decreasing the rate of motor vehicle theft in recent years, the actual number of thefts has increased. It is vital for law enforcement agencies to know who is committing motor vehicle theft and where vehicles are being stolen. This study answers these questions by examining offender demographic characteristics and the location types most targeted for motor vehicle theft in Texas from 2001 to 2005. The state of Texas was chosen because Texas has continually been ranked second in the Federal Bureau of Investigation's Uniform Crime Report for the number of reported incidents of motor vehicle theft in the United States.

This diploma project is about designing a concept of an anti-theft tracking device for a bicycle. The device is equipped with a GNSS module for tracking of current location, GSM module for sending the location data in case of a theft and a BT module for user settings via mobile phone. The bike theft detection is detected by an accelerometer. The final goal of this project is a concept of such a device for evaluation and improvement purposes.

The threat posed by non-ferrous metal theft to industries in South Africa is substantial but is also regarded with indifference. A reason for this view may be that the criminal act is ordinarily not accompanied by violence and the target of the crime is an object that is far removed from the vicinity of the majority of South Africans. Non-ferrous metal theft may sometimes even be erroneously termed a victimless crime. This study endeavours to shed light on the complexities of non-ferrous metal theft and the industrial dangers that may be suffered if this crime is not eradicated. A case study from the mining industry was used to examine the nature and extent of non-ferrous metal theft. A mixed methods approach was followed in terms of which qualitative and quantitative research was done sequentially to provide the best possible representation of the situation. The participant allowed access to data over a six-year period as well as access to mine employees for interviews to assist with understanding the safety and security measures that the mine put in place to protect its workforce. This information led to another realisation, namely that if non-ferrous metal thieves cut an electricity supply line that is critical for life support and transportation in the mine, mineworkers may succumb to the harsh conditions underground. It also became evident that the police and the criminal justice system must develop a better understanding of the seriousness of non-ferrous metal theft. If this does not happen in the near future, managing the consequences of nonferrous metal theft at South African mines will become a mammoth task. Such mines and other industries affected by non-ferrous metal related theft must collaborate with each other and the police in order to understand the nature of the crime and to ensure that the prosecution of the perpetrators is handled properly. These industries should also subscribe to a pragmatic approach to crime prevention whereby various components from different crime prevention strategies are used to address the issues being experienced and whereby a unique crime prevention model for each industry and mining site can be developed. / Police Practice / M.A. (Policing)

The threat posed by non-ferrous metal theft to industries in South Africa is substantial but is also regarded with indifference. A reason for this view may be that the criminal act is ordinarily not accompanied by violence and the target of the crime is an object that is far removed from the vicinity of the majority of South Africans. Non-ferrous metal theft may sometimes even be erroneously termed a victimless crime. This study endeavours to shed light on the complexities of non-ferrous metal theft and the industrial dangers that may be suffered if this crime is not eradicated. A case study from the mining industry was used to examine the nature and extent of non-ferrous metal theft. A mixed methods approach was followed in terms of which qualitative and quantitative research was done sequentially to provide the best possible representation of the situation. The participant allowed access to data over a six-year period as well as access to mine employees for interviews to assist with understanding the safety and security measures that the mine put in place to protect its workforce. This information led to another realisation, namely that if non-ferrous metal thieves cut an electricity supply line that is critical for life support and transportation in the mine, mineworkers may succumb to the harsh conditions underground. It also became evident that the police and the criminal justice system must develop a better understanding of the seriousness of non-ferrous metal theft. If this does not happen in the near future, managing the consequences of nonferrous metal theft at South African mines will become a mammoth task. Such mines and other industries affected by non-ferrous metal related theft must collaborate with each other and the police in order to understand the nature of the crime and to ensure that the prosecution of the perpetrators is handled properly. These industries should also subscribe to a pragmatic approach to crime prevention whereby various components from different crime prevention strategies are used to address the issues being experienced and whereby a unique crime prevention model for each industry and mining site can be developed. / Police Practice / M.A. (Policing)

This research is a exploratory and descriptive study based on juvenile's perceptions with regard to shop theft. Secondary data sources were consulted to supplement the empirical data collected by means of a comprehensive questionnaire. Five hundred learners from grades 10, 11 and 12 in Mabopane were selected for the completion of the questionnaires. Shop theft was further elucidated by the application of criminological theories to explain research findings by highlighting their relationship with shop theft. Main research findings established that there are significant statistical differences with regard to the learner gender, age and grade as far as their views on shop theft were concerned. Recommendations based on the findings include teaching Criminology at secondary schools, the development of an anti shop theft youth oriented crime prevention program, shop theft educational and awareness programmes, and shoplifter offender prevention programs. / Criminology / M.A. (Criminology)

This research is a exploratory and descriptive study based on juvenile's perceptions with regard to shop theft. Secondary data sources were consulted to supplement the empirical data collected by means of a comprehensive questionnaire. Five hundred learners from grades 10, 11 and 12 in Mabopane were selected for the completion of the questionnaires. Shop theft was further elucidated by the application of criminological theories to explain research findings by highlighting their relationship with shop theft. Main research findings established that there are significant statistical differences with regard to the learner gender, age and grade as far as their views on shop theft were concerned. Recommendations based on the findings include teaching Criminology at secondary schools, the development of an anti shop theft youth oriented crime prevention program, shop theft educational and awareness programmes, and shoplifter offender prevention programs. / Criminology and Security Science / M.A. (Criminology)