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My research interests include:
  • Adaptive systems 
  • Analysis and refinement of policies for adaptive systems
  • Software engineering for adaptive systems
  • Adaptive security and privacy 
My research focuses on the addressing the practical problems associated with building and maintaining self- managing (adaptive) systems by combining rigorous formal techniques with concrete implementations and applications of those techniques. My interest in practical applications of formal techniques includes investigation of the usability of technologies that leverage such formalisms. My doctoral research focused on formal ways of refining and analysing the policy rules that govern the behaviour of adaptive systems.  Motivated by the increasing use of mobile computing applications, I have been investigating ways in which machine-learning techniques can improve the privacy management capabilities for users of such applications, work which started in the context of the EPSRC funded PRiMMA project and the Software Engineering for Usable Mobile Privacy Management project, funded by a Microsoft Software Engineering Innovation Foundation award.  Current projects that are pursuing a related research agenda include:
I am also interested in computer science education research. In particular, I worked on studying the efficacy of visual programming approaches to teaching entry level computer science.  I was part of the team that developed Sense, a unique ubiquitous computing experimentation kit that allows novice students to build computer programs that interact with the physical world and online information sources

For a list of my publications, visit my page on the Open Research Online repository.

Popular posts from this blog

Privacy Itch and Scratch

Ubiquitous computing technologies are being used to collect, process and share increasing amounts of personal information, from our location and physical activity levels to the things we buy and the web pages we read.  Although these developments have created a wealth of new applications that engage and entertain us, they also pose significant challenges for our privacy - particularly the challenge of maintaining awareness and control over our personal information flows as we go about our daily lives.

My colleagues, Vikram Mehta, Blaine Price and Bashar Nuseibeh, and I have been exploring new interaction metaphors for enhancing our privacy awareness and control.  Our earlier work in this area used haptic interactions through the users' smartphone to enable privacy controls to be configured by physically shaking and moving the device (PrivacyShake).   More recently we have been exploring the role of on-body interfaces to achieve more subtle and non-intrusive mechanisms for privacy …

Visual programming for 'wiring' the Internet of Things

There is a proliferation of devices being developed to form the building blocks of the Internet of Things (IoT), from Internet-connected power sockets and light bulbs to kettles, toasters and washing machines. However, to realise the full potential of the IoT, it will be necessary to allow these devices to interconnect and share data with each other to deliver the functionalities required by end-users. In recent research on end-user programming for the IoT, my colleagues Pierre Akiki, Yijun Yu and myself have proposed the notion of Visual Simple Transformations (ViSiT), that provides a visual programming paradigm for users to wire together IoT devices. The video above shows a demonstration of the ViSiT solution and full details of the approach will appear in an upcoming special issue of the ACM Transactions on Computer-Human Interaction (ToCHI).

This work is highlighted in a recent IEEE Software Blog: Empowering Users to Build IoT Software with a Puzzle-like Environment and full deta…

Privacy-by-Design Framework for Internet of Things Systems

IOT-2016 7-9 September, 2016, Stuttgart, Germany from Charith Perera
Recent DDoS attacks on key internet services, like the attack that affected the Dyn domain name service, highlighted the security challenges associated with the proliferation of insecure Internet of Things (IoT) systems.  This attack exploited common vulnerabilities like the use of default administration passwords on IoT devices such as internet-enabled CCTV cameras, internet-enabled appliances and smart home devices, to recruit over hundreds of thousands of nodes into a botnet.   This capability highlights the cyber security threats associated with the IoT and brings into sharp relief the importance of considering both security and privacy when designing these systems.

In recent work, presented at the Internet of Things Conference, we describe a privacy-by-design framework for assessing the privacy capabilities of IoT applications and platforms.  Building on more general design strategies for privacy in informaiton …