PhD. Student Week: Ijeoma Faustina Ekeh, Junior Research Fellow in Information Security

On 13 May, the Estonian Doctoral School – a joint initiative of all Estonian universities – celebrates European Doctoral Day. During a social media campaign from 11 to 17 May, doctoral researchers from across Estonia share their experiences, reflecting on the value of doctoral studies and the broader impact of research. Ijeoma Faustina Ekeh, Junior Research Fellow in Information Security shares her thoughts.

Please describe briefly your field of research.

I research the security of artificial intelligence and how AI can be used to protect AI systems and other information systems. With the growing use of AI in different areas, there is an increasing need to ensure that these systems are secure, reliable, and resistant to attacks or misuse. My work focuses on improving methods for detecting and preventing security risks in AI systems.

What motivated you to pursue doctoral studies?

I was first introduced to the idea of pursuing a PhD when my current supervisor invited me to attend an academic event. Listening to the discussions, networking with researchers, and learning how they actively work to solve real-world problems really opened my mind. It made me think deeply about research and its impact.

At first, I asked myself whether I wanted to pursue a PhD simply because others were doing it. However, as I reflected more, I realised that my interest was genuine. I am naturally curious, I enjoy asking deeper questions, and I want to contribute to finding solutions through research.

What has been the most exciting or unexpected experience during your doctoral studies?

One of the most memorable experiences during my PhD has been realising that the journey is not as straightforward as I initially expected. I thought I would quickly prepare papers, start publishing, and move smoothly through the process. However, I soon experienced several rejections of my early work, which was quite challenging and made me question my progress.

A defining moment for me was receiving the rejection of my first paper. It was difficult, and at the time I felt discouraged and even wondered whether I was truly on the right path.

Over time, however, I began to see these experiences differently. I realised that such moments are part of the process of becoming a better researcher. Looking back now, I can clearly see how much my thinking and research skills have improved because of those experiences.

Overall, this journey has shaped me in many ways — not only by expanding my knowledge and curiosity, but also by helping me develop resilience and a deeper understanding of how research truly works.

What advice would you give to someone who is currently considering pursuing a PhD in computer science?

My advice would be to make sure you are genuinely curious about research and solving problems. A PhD is not just about earning a title; it requires patience, consistency, and the ability to keep going even when things become difficult. You will face challenges, but if you stay committed, you will grow significantly and learn a great deal throughout the process.

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The campaign highlights the opportunities offered by doctoral studies in Estonia and showcases diverse career paths in academia and beyond.

European Doctoral Day homepage: https://www.eurodocday.org/

Estonian Doctoral School homepage: https://www.doktorikool.ee/en/

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