This diploma thesis is about forensic science, criminal acts and organization of protective security units investigating such activities in the former Czechoslovakia between the years of 1948 and 1969. It also indicates how the criminal activity was developed in the Czechoslovakia and how the former police departments took part in the investigation. The course of the investigation, the crime investigation methods, and the theoretical bases of that time, on which the forensic science was based, are thoroughly described on specific serious crimes. The thesis mainly draws from the primary resources such as archive research, notably from the Security Service Archive's materials, and the periodical press. Keywords Forensic science in the Czechoslovakia, "Department of Public Security" (Veřejná bezpečnost), murder, criminal activity, criminal offence in the Czechoslovakia, Security Services Archive

Cognitive autonomy of an autonomous system depends on its cyber module's ability to comprehend the actions and intent of the applications and services running on that system. The autonomous system should be able to accomplish this without or with limited human intervention. These mission-critical autonomous systems are often deployed in unpredictable and dynamic environments and are vulnerable to evasive cyberattacks. In particular, some of these cyberattacks are Advanced Persistent Threats where an attacker conducts reconnaissance for a long period time to ascertain system features, learn system defenses, and adapt to successfully execute the attack while evading detection. Thus an autonomous system's cognitive autonomy and cybersecurity intelligence depend on its capability to learn, classify applications (good and bad), predict the attacker's next steps, and remain operational to carryout the mission-critical tasks even under cyberattacks. In this dissertation, we propose novel learning and prediction models for enhancing cognitive autonomy and cybersecurity in autonomous systems. We develop (1) a model using deep learning along with a model selection framework that can classify benign and malicious operating contexts of a system based on performance counters, (2) a deep learning based natural language processing model that uses instruction sequences extracted from the memory to learn and profile the behavior of evasive malware, (3) a scalable deep learning based object detection model with data pre-processing assisted by fuzzy-based clustering, (4) fundamental guiding principles for cognitive autonomy using Artificial Intelligence (AI), (5) a model for privacy-preserving autonomous data analytics, and finally (6) a model for backup and replication based on combinatorial balanced incomplete block design in order to provide continuous availability in mission-critical systems. This research provides effective and computationally efficient deep learning based solutions for detecting evasive cyberattacks and increasing autonomy of a system from application-level to hardware-level. <br>

The regulation of the private security industry has been an issue of debate for a number of years in South Africa, as well as in the rest of the world. The debate mainly centers around issues such as the need for regulation in this Industry and the objectives of regulation. This thesis argues that regulation is of utmost importance in this Industry and furthermore, that the objective ofregulation should be to set standards in the Industry. If this is the case, the protection of the public interest will be a natural result of regulating the standards. In addition, this thesis argues for the inclusion of the private investigator into the scope of regulation and suggests that this sector should ultimately be regulated through the means of separate legislation. This thesis furthermore provides two models for the regulation of the private security industry in South Africa. These models are described as the Semi-Integrated Wide Model (SIWM) and the Fully Integrated Wide Model (FIWM). These two models provide Government with the option of regulating the Industry without alienating the latter. Government will still have the ultimate responsibility for regulation, but will allow the Industry to be central in setting standards and requirements. In this way, the Industry will not regulate itself and Government will have the ultimate responsibility of protecting the interests of the public and the State / Police Practice / D. litt. et. Phil. (Police Science)

Private security forms part of a key strategy component in South Africa in terms of the alignment of the safety and security sector. Both private and public sector businesses in South Africa depend on private security systems to safeguard their assets. Although the growth in the private security sector has not provided for outstanding qualities and high levels of qualification criteria for employment in the sector, this quiet transformation of South Africa’s every day security landscape has potentially wide-ranging concerns. It raises important questions about the accountability and responsibility of security companies in providing their clients with disciplined security officers. There are reasons for concerns at Eskom because of the disciplinary problems experienced by security officers. These disciplinary problems create an environment of instability and uncertainty, which impacts on the core purpose of Eskom which is to provide sustainable electricity solutions to grow the economy and improve the quality of life of people in South Africa. Accordingly, the main purpose for the deployment of security officers to Eskom centres is to create a safer environment for Eskom and to safeguard its assets. Currently, disciplinary problems in the workplace constitute one of the most basic problems facing employers in both the public and private sectors. Therefore, developing and maintaining a disciplined security workforce is a priority that should be on the agenda of all private security companies. The objectives of this research included the following:  Examine which factors contribute to disciplinary problems;  Determine what the causes of these factors are that contribute to disciplinary problems; and  Identify what solutions can be used to address the factors contributing to disciplinary problems. A qualitative research approach was used in this study, in that verbal non-numerical data was collected from people in their natural environments who experience xiv everyday situations in the workplace in order to gain a more complete understanding of the problem area. The main method of data collection was by means of face-to-face interviews between the researcher and the interviewees which took place according to a standardised interview schedule. Thirty (30) respondents drawn by means of probability and non-probability sampling processes and were individually interviewed by the interviewer. Accordingly, this study has examined issues as to why security officers do not reliably uphold the discipline that is required of them in the provision of security services at the Eskom centres. The problem of poor discipline at Eskom centres compromises security, which impacts negatively on profitability when a site experiences losses and theft because security officers do not adhere to Eskom’s security requirements while they are deployed at Eskom centres. It is important for any institution to first examine and identify the disciplinary problems experienced by its employees before those problems can be addressed successfully. Accordingly, the nature and extent of disciplinary problems by security officers were examined within this study to assess the effectiveness of security management practices within the private security companies supplying a security service to Eskom. This study, therefore, examined disciplinary problems at Eskom centres (on the north coast of KwaZulu-Natal) to identify the specific problems which the security officers have been experiencing and to indicate how effective their company management systems were in dealing with those problems. The study also assisted with formulating adequate recommendations with regard to managing the disciplinary problems at Eskom centres. / Criminology and Security Science / M. Tech. (Security Management)

In South Africa, there are high numbers of criminal incidents that are reported to the police every year. Crime prevention needs different stakeholders to work together in order to reduce crime. The South African Police Service (SAPS) looks after the interests of all citizens while the Private Security Industry (PSI) looks after the interests of their paying clients. Only people who can afford to pay extra ‘private’ protection services that are rendered by private security service providers use these services. In this manner, the PSI is a very important stakeholder in crime reduction. Of critical importance is the effective collaboration between the PSI and SAPS in combating crime. The mixed methods approach was used in this study: qualitative (focus group discussions which were only used by the researcher to familiarise himself with the topic being studied and one-on-one interviews with the members of top management from both PSI and the SAPS) and quantitative (questionnaires completed by members of the PSI and members of SAPS from operational levels). The study revealed the following: • There are barriers to more effective partnership policing between the SAPS and PSI in combating crime. These barriers came from both sides (SAPS and PSI) whereby the SAPS are said to be looking down on PSI and taking time to respond to the crime scenes when called upon. On the other hand, the manner in which the security members behave on the crime scene was said to be problematic; • Lack of effective control of PSI by the regulating body makes it easy for fly-by-night security companies to operate in South Africa hence tarnishing the image of the PSI; • There is a need to give additional legal powers to the deserving private security officers, after thorough training, in order to qualify them as Peace Officers so as to strengthen their role in crime prevention in areas where they do not render their security services as opposed to the citizens powers that the private security officers have as outlined in section 42 of the Criminal Procedure Act No. 51 of 1977; • The Memorandum of Understanding between the SAPS and PSI should be formulated by the crime prevention stakeholders in order to combat crime effectively; • The security training should be improved in order to enable the security officers to help police combat crime effectively. Based on the research findings, the recommendations were formulated which, hopefully, would help the stakeholders to improve their roles in crime prevention. / Criminology and Security Science / D. Litt. et Phil. (Criminology)

Retail stores rely on consumers to maintain their businesses and growth. Much of their success depends on the safety and security of consumers. The more people come and buy the products, the more profitable the stores become. If the safety and security of consumers (or their perceptions thereof) at a shopping centre where a retail store is sited is in question, consumers may well stop frequenting such centres and do their shopping at other retail centres at which they perceive to be more safe and secure to do their shopping. Consumers’ ‘peace-of-mind’ plays a vital role in their selection of which retail store(s) to frequent and will often determine whether a repeat visit will occur. The extent of incidents of crime of whatever nature at a particular shopping centre will also impact negatively on shoppers’ perceptions of ‘how safe it is to shop’ at particular centres. Security measures differ from one retail store to another and also between the size and layout, as well as the location of the retail store. The rate at which criminal offences take place at retail stores is currently vague or unknown. Therefore, it is vital that specific risks confronting these retail stores should be identified and analysed with the intention of recommending specific security measures. Business crime and violence present significant threats to consumers’ safety and security in South Africa. High levels of business associated crimes have compelled communities and business bodies such as retail stores to provide their own security for the protection of their assets, as well as consumers. Effective security measures are a prerequisite at retail stores to ensure the safety and security of consumers whilst visiting retail stores. Precaution ought to be taken when dealing with any crime problem that affects consumers at any business environment, in this study more precisely: retail stores. The study explored the existing security measures at retail stores for the protection of consumers. The researcher employed qualitative methods: one-on-one interviews with participants and site observations at selected retail stores. There were 30 participants (20 consumers and 10 security officers). The study found the following:  Retail stores were exposed to security risks such as theft; shoplifting; common robbery; armed robbery; fraud; arson and assaults (grievous bodily harm) and burglary.  The security measures that are currently in place are not adequate to protect retail stores. These security measures differ from one retail store to the next.  In order to improve safety and security at retail stores there should be a security standard that is applicable to the retail stores. Based on the findings, some of the recommendations were as follows:  Retail stores should be protected in line with the level of risk of the area where the retail store is situated: low risk; medium risk; and high risk.  Security managers should conduct security awareness regularly.  Threat assessments should be conducted regularly as well.  Consumers are encouraged to report to the Security manager at the retail store any suspicious actions; persons; objects; and vehicles. / Criminology and Security Science / M. Tech. (Security Management)

The regulation of the private security industry has been an issue of debate for a number of years in South Africa, as well as in the rest of the world. The debate mainly centers around issues such as the need for regulation in this Industry and the objectives of regulation. This thesis argues that regulation is of utmost importance in this Industry and furthermore, that the objective ofregulation should be to set standards in the Industry. If this is the case, the protection of the public interest will be a natural result of regulating the standards. In addition, this thesis argues for the inclusion of the private investigator into the scope of regulation and suggests that this sector should ultimately be regulated through the means of separate legislation. This thesis furthermore provides two models for the regulation of the private security industry in South Africa. These models are described as the Semi-Integrated Wide Model (SIWM) and the Fully Integrated Wide Model (FIWM). These two models provide Government with the option of regulating the Industry without alienating the latter. Government will still have the ultimate responsibility for regulation, but will allow the Industry to be central in setting standards and requirements. In this way, the Industry will not regulate itself and Government will have the ultimate responsibility of protecting the interests of the public and the State / Police Practice / D. litt. et. Phil. (Police Science)

Private security forms part of a key strategy component in South Africa in terms of the alignment of the safety and security sector. Both private and public sector businesses in South Africa depend on private security systems to safeguard their assets. Although the growth in the private security sector has not provided for outstanding qualities and high levels of qualification criteria for employment in the sector, this quiet transformation of South Africa’s every day security landscape has potentially wide-ranging concerns. It raises important questions about the accountability and responsibility of security companies in providing their clients with disciplined security officers. There are reasons for concerns at Eskom because of the disciplinary problems experienced by security officers. These disciplinary problems create an environment of instability and uncertainty, which impacts on the core purpose of Eskom which is to provide sustainable electricity solutions to grow the economy and improve the quality of life of people in South Africa. Accordingly, the main purpose for the deployment of security officers to Eskom centres is to create a safer environment for Eskom and to safeguard its assets. Currently, disciplinary problems in the workplace constitute one of the most basic problems facing employers in both the public and private sectors. Therefore, developing and maintaining a disciplined security workforce is a priority that should be on the agenda of all private security companies. The objectives of this research included the following:  Examine which factors contribute to disciplinary problems;  Determine what the causes of these factors are that contribute to disciplinary problems; and  Identify what solutions can be used to address the factors contributing to disciplinary problems. A qualitative research approach was used in this study, in that verbal non-numerical data was collected from people in their natural environments who experience xiv everyday situations in the workplace in order to gain a more complete understanding of the problem area. The main method of data collection was by means of face-to-face interviews between the researcher and the interviewees which took place according to a standardised interview schedule. Thirty (30) respondents drawn by means of probability and non-probability sampling processes and were individually interviewed by the interviewer. Accordingly, this study has examined issues as to why security officers do not reliably uphold the discipline that is required of them in the provision of security services at the Eskom centres. The problem of poor discipline at Eskom centres compromises security, which impacts negatively on profitability when a site experiences losses and theft because security officers do not adhere to Eskom’s security requirements while they are deployed at Eskom centres. It is important for any institution to first examine and identify the disciplinary problems experienced by its employees before those problems can be addressed successfully. Accordingly, the nature and extent of disciplinary problems by security officers were examined within this study to assess the effectiveness of security management practices within the private security companies supplying a security service to Eskom. This study, therefore, examined disciplinary problems at Eskom centres (on the north coast of KwaZulu-Natal) to identify the specific problems which the security officers have been experiencing and to indicate how effective their company management systems were in dealing with those problems. The study also assisted with formulating adequate recommendations with regard to managing the disciplinary problems at Eskom centres. / Criminology and Security Science / M. Tech. (Security Management)

In South Africa, there are high numbers of criminal incidents that are reported to the police every year. Crime prevention needs different stakeholders to work together in order to reduce crime. The South African Police Service (SAPS) looks after the interests of all citizens while the Private Security Industry (PSI) looks after the interests of their paying clients. Only people who can afford to pay extra ‘private’ protection services that are rendered by private security service providers use these services. In this manner, the PSI is a very important stakeholder in crime reduction. Of critical importance is the effective collaboration between the PSI and SAPS in combating crime. The mixed methods approach was used in this study: qualitative (focus group discussions which were only used by the researcher to familiarise himself with the topic being studied and one-on-one interviews with the members of top management from both PSI and the SAPS) and quantitative (questionnaires completed by members of the PSI and members of SAPS from operational levels). The study revealed the following: • There are barriers to more effective partnership policing between the SAPS and PSI in combating crime. These barriers came from both sides (SAPS and PSI) whereby the SAPS are said to be looking down on PSI and taking time to respond to the crime scenes when called upon. On the other hand, the manner in which the security members behave on the crime scene was said to be problematic; • Lack of effective control of PSI by the regulating body makes it easy for fly-by-night security companies to operate in South Africa hence tarnishing the image of the PSI; • There is a need to give additional legal powers to the deserving private security officers, after thorough training, in order to qualify them as Peace Officers so as to strengthen their role in crime prevention in areas where they do not render their security services as opposed to the citizens powers that the private security officers have as outlined in section 42 of the Criminal Procedure Act No. 51 of 1977; • The Memorandum of Understanding between the SAPS and PSI should be formulated by the crime prevention stakeholders in order to combat crime effectively; • The security training should be improved in order to enable the security officers to help police combat crime effectively. Based on the research findings, the recommendations were formulated which, hopefully, would help the stakeholders to improve their roles in crime prevention. / Criminology and Security Science / D. Litt. et Phil. (Criminology)

This dissertation investigates the value of deep reinforcement learning (DRL) within an agent-based model (ABM) of a large open-air venue. The intent is to reduce civilian casualties in an active shooting incident (ASI). There has been a steady increase of ASIs in the United States of America for over 20 years, and some of the most casualty-producing events have been in open spaces and open-air venues. More research should be conducted within the field to help discover policies that can mitigate the threat of a shooter in extremis. This study uses the concept of dynamic signage, controlled by a DRL policy, to guide civilians away from the threat and toward a safe exit in the modeled environment. It was found that a well-trained DRL policy can significantly reduce civilian casualties as compared to baseline scenarios. Further, the DRL policy can assist decision makers in determining how many signs to use in an environment and where to place them. Finally, research using DRL in the ASI space can yield systems and policies that will help reduce the impact of active shooters during an incident.