Towards situational awareness of botnet activity in the Internet of Things

An IoT botnet detection model is designed to detect anomalous attack traffic utilised by the mirai botnet malware. The model uses a novel application of Deep Bidirectional Long Short Term Memory based Recurrent Neural Network (BLSTMRNN), in conjunction with Word Embedding, to convert string data found in captured packets, into a format usable by the BLSTM-RNN. In doing so, this paper presents a solution to the problem of detecting and making consumers situationally aware when their IoT devices are infected, and forms part of a botnet. The proposed model addresses the issue of detection, and returns high accuracy and low loss metrics for four attack vectors used by the mirai botnet malware, with only one attack vector shown to be difficult to detect and predict. A labelled dataset was generated and used for all experiments, to test and validate the accuracy and data loss in the detection model. This dataset is available upon request

Exploring the use of conversational agents to improve cyber situational awareness in the Internet of Things (IoT).

The Internet of Things (IoT) is an emerging paradigm, which aims to extend the power of the Internet beyond computers and smartphones to a vast and growing range of "things" - devices, processes and environments. The result is an interconnected world where humans and devices interact with each other, establishing a smart environment for the continuous exchange of information and services. Billions of everyday devices such as home appliances, surveillance cameras, wearables and doorbells, enriched with computational and networking capabilities, have already been connected to the Internet. However, as the IoT has grown, the demand for low-cost, easy-to-deploy devices has also increased, leading to the production of millions of insecure Internet-connected smart devices. Many of these devices can be easily exploited and leveraged to perform large-scale attacks on the Internet, such as the recently witnessed botnet attacks. Since these attacks often target consumer-level products, which commonly lack a screen or user interface, it can be difficult for users to identify signs of infection and be aware of devices that have been compromised. This thesis presents four studies which collectively explored how user awareness of threats in consumer IoT networks could be improved. Maintaining situational awareness of what is happening within a home network is challenging, not least because malicious activity often occurs in devices which are not easily monitored. This thesis evaluated the effectiveness of conversational agents to improve Cyber Situational Awareness. In doing so, it presented the first study to investigate their ability to help users improve their perception of smart device activity, comprehend this in the context of their home environment, and project this knowledge to determine if a threat had occurred or may occur in the future. The research demonstrated how a BLSTMRNN with word embedding could be used to extract semantic meaning from packets to perform deep packet inspection and detect IoT botnet activity. Specifically, how the models use of contextual information from both the past and future enabled better predictions to be made about the current state (packet) due to the sequential nature of the network traffic. In addition, a cross-sectional study examined users' awareness and perception of threats and found that, although users value security and privacy, they found it difficult to identify threats and infected devices. Finally, novel cross-sectional and longitudinal studies evaluated the use of conversational agents, and demonstrated them to be an effective and efficient method of improving Cyber Situational Awareness. In particular, this was shown to be true when using a multi-modal approach and combining aural, verbal and visual modalities

Bridging Information Security and Environmental Criminology Research to Better Mitigate Cybercrime

Cybercrime is a complex phenomenon that spans both technical and human aspects. As such, two disjoint areas have been studying the problem from separate angles: the information security community and the environmental criminology one. Despite the large body of work produced by these communities in the past years, the two research efforts have largely remained disjoint, with researchers on one side not benefitting from the advancements proposed by the other. In this paper, we argue that it would be beneficial for the information security community to look at the theories and systematic frameworks developed in environmental criminology to develop better mitigations against cybercrime. To this end, we provide an overview of the research from environmental criminology and how it has been applied to cybercrime. We then survey some of the research proposed in the information security domain, drawing explicit parallels between the proposed mitigations and environmental criminology theories, and presenting some examples of new mitigations against cybercrime. Finally, we discuss the concept of cyberplaces and propose a framework in order to define them. We discuss this as a potential research direction, taking into account both fields of research, in the hope of broadening interdisciplinary efforts in cybercrime researc

Adversarial behaviours knowledge area

The technological advancements witnessed by our society in recent decades have brought improvements in our quality of life, but they have also created a number of opportunities for attackers to cause harm. Before the Internet revolution, most crime and malicious activity generally required a victim and a perpetrator to come into physical contact, and this limited the reach that malicious parties had. Technology has removed the need for physical contact to perform many types of crime, and now attackers can reach victims anywhere in the world, as long as they are connected to the Internet. This has revolutionised the characteristics of crime and warfare, allowing operations that would not have been possible before. In this document, we provide an overview of the malicious operations that are happening on the Internet today. We first provide a taxonomy of malicious activities based on the attacker’s motivations and capabilities, and then move on to the technological and human elements that adversaries require to run a successful operation. We then discuss a number of frameworks that have been proposed to model malicious operations. Since adversarial behaviours are not a purely technical topic, we draw from research in a number of fields (computer science, criminology, war studies). While doing this, we discuss how these frameworks can be used by researchers and practitioners to develop effective mitigations against malicious online operations.Published versio

Towards a conversational agent for threat detection in the internet of things.

A conversational agent to detect anomalous traffic in consumer IoT networks is presented. The agent accepts two inputs in the form of user speech received by Amazon Alexa enabled devices, and classified IDS logs stored in a DynamoDB Table. Aural analysis is used to query the database of network traffic, and respond accordingly. In doing so, this paper presents a solution to the problem of making consumers situationally aware when their IoT devices are infected, and anomalous traffic has been detected. The proposed conversational agent addresses the issue of how to present network information to non-technical users, for better comprehension, and improves awareness of threats derived from the mirai botnet malware

Measuring and Disrupting Malware Distribution Networks: An Interdisciplinary Approach

Malware Delivery Networks (MDNs) are networks of webpages, servers, computers, and computer files that are used by cybercriminals to proliferate malicious software (or malware) onto victim machines. The business of malware delivery is a complex and multifaceted one that has become increasingly profitable over the last few years. Due to the ongoing arms race between cybercriminals and the security community, cybercriminals are constantly evolving and streamlining their techniques to beat security countermeasures and avoid disruption to their operations, such as by security researchers infiltrating their botnet operations, or law enforcement taking down their infrastructures and arresting those involved. So far, the research community has conducted insightful but isolated studies into the different facets of malicious file distribution. Hence, only a limited picture of the malicious file delivery ecosystem has been provided thus far, leaving many questions unanswered. Using a data-driven and interdisciplinary approach, the purpose of this research is twofold. One, to study and measure the malicious file delivery ecosystem, bringing prior research into context, and to understand precisely how these malware operations respond to security and law enforcement intervention. And two, taking into account the overlapping research efforts of the information security and crime science communities towards preventing cybercrime, this research aims to identify mitigation strategies and intervention points to disrupt this criminal economy more effectively

Cyber Safety: A theoretical Insight

This paper is written by the EUCPN Secretariat following the topic of the Estonian Presidency of the Network, which is Cyber Safety. It gives a theoretical insight in what Cyber Safety is. Furthermore, we take interest in what the exact object is of cybercrime and have a deeper look into two European policy priorities, namely cyber-attacks and payment fraud. Moreover, these priorities are the subject of the European Crime Prevention award. The goal of this paper is to add to the digital awareness of local policy-makers and practitioners on a theoretical level. A toolbox will follow with legislative measures, existing policies and best practices on this topic

Defence Against the Dark Artefacts: Smart Home Cybercrimes and Cybersecurity Standards

This paper analyses the assumptions underpinning a range of emerging EU and UK smart home cybersecurity standards. We use internet of things (IoT) case studies (such as the Mirai Botnet affair) and the criminological concept of 'routine activity theory' to situate our critique. Our study shows that current cybersecurity standards mainly assume smart home environments are (and will continue to be) underpinned by cloud architectures. This is a shortcoming in the longevity of standards. This paper argues that edge computing approaches, such as personal information management systems, are emerging for the IoT and challenge the cloud focused assumptions of these standards. In edge computing, data can be stored in a decentralised manner, locally and analysed on the client using federated learning. This can have advantages for security, privacy and legal compliance, over centralised cloud-based approaches, particularly around cross border data flows and edge based security analytics. As a consequence, standards should start to reflect the increased interest in this trend to make them more aspirational and responsive for the long term; as ultimately, current IoT architectures are a choice, as opposed to inherent. Our paper unpacks the importance of the adoption of edge computing models which could enable better management of external cyber-criminality threats in smart homes. We also briefly discuss challenges of building smart homes that can accommodate the complex nature of everyday life in the home. In addition to technical aspects, the social and interactional complexities of the home mean internal threats can also emerge. As these human factors remain unresolved in current approaches to smart home cybersecurity, a user's security can be impacted by such technical design choices