Motivated by Exploration and Connection: A Promising Career in Security R&D and Nurturing Next-Generation Talent at Fujitsu
In an era marked by rapid technological evolution and increasingly sophisticated cyber threats, the field of security research and development (R&D) is more crucial than ever. Among the innovative minds driving this vital work is Haruhi Mitani, a passionate researcher at Fujitsu’s Data & Security Research Laboratory. Joining Fujitsu in 2023, Haruhi’s journey into security R&D reflects a deep motivation rooted in exploration, connection, and a strong commitment to societal contribution.
From Physics Enthusiast to Security Researcher
Haruhi’s aspiration to become a researcher began early, inspired by a family acquaintance who was a prominent physics researcher. Captivated by complex subjects such as particle physics, she was drawn into scientific inquiry—joining her high school physics research club and embracing the thrill of formulating questions, building hypotheses, and conducting experiments.
Parallel to her fascination with physics, Haruhi’s exposure to IT through her parents’ work introduced her to the world of cybersecurity. She actively participated in IT events and initiatives like SecHack365, a hackathon aimed at nurturing security innovators. These experiences ignited a passion for security and revealed the field’s societal importance, ultimately guiding her to focus her career exclusively on security research.
Bridging Technology and Society Through Communication
Since joining Fujitsu, Haruhi has contributed to diverse projects, notably the "Secret Leakage Detection Technology" initiative. This project developed innovative technology to automatically identify confidential information in documents, aligning with internal information management protocols. Haruhi played a key role in prototype development and enhancing detection accuracy.
The challenge lay in addressing variability and false positives during detection. Haruhi devised a new evaluation metric with tailored weighting to improve precision, significantly reducing risks associated with information leakage from unauthorized use.
Her experience presenting this work at SCIS2025, one of Japan’s premier security symposiums, was transformative. The opportunity to engage with external feedback shifted her perspective beyond pure technological advancement, highlighting the vital role of effective communication and societal connection in R&D.
Advancing Security with Multi-AI Agent Technology
Currently, Haruhi is at the forefront of developing Multi-AI agent security technology. This approach employs multiple autonomous AI agents that collaborate to predict and counteract cyberattacks proactively. Specifically, she is working on AI agents capable of autonomously proposing effective defensive measures against increasingly sophisticated and diverse cyber threats—including attempts to exploit generative AI systems.
Her vision is a responsive, adaptive security infrastructure that not only addresses known vulnerabilities but also flexibly counters emerging, unforeseen threats. By ensuring AI complements human judgment in security operations, Haruhi aims to contribute to a safer, more secure society.
Balancing Work with Creativity and Renewal
Outside the lab, Haruhi finds balance through creative pursuits such as visiting art museums, watching films, and baking bread and sweets—including her homemade cinnamon rolls. She appreciates how these activities provide a mental shift from research, offering fresh perspectives and inspiration.
Travel is another source of renewal, with experiences of diverse cultures and environments fueling new ideas and enhancing creativity. These personal interests complement and enrich her professional work, fostering holistic growth.
Passion for Developing the Next Generation of Security Experts
Haruhi’s commitment extends beyond her research. Having aspired to support and educate others since childhood—and even obtaining a teaching license—she actively engages in initiatives to nurture future talent in cybersecurity.
Recognizing the persistent talent shortage in the industry, Haruhi participates in Fujitsu-led community events such as “Girls Meet STEM in Tokyo.” These programs introduce middle and high school girls to STEM careers, providing hands-on experiences with cutting-edge technology and insights into research roles. Haruhi’s involvement is both an opportunity to inspire young minds and a reaffirmation of her own journey.
Voices from Fujitsu Colleagues
Yuki Unno, Senior Research Director at the Data & Security Research Laboratory, praises Haruhi’s innovative approach: “With AI’s rapid evolution, cyberattacks are becoming more sophisticated. Haruhi’s research in Multi-AI agent security technology embodies the concept of Active Cyber Defense. Despite the inherent challenges of pioneering new technology, she consistently overcomes obstacles with creativity and energy, steadily achieving remarkable progress.”
Looking Ahead
Haruhi Mitani’s career exemplifies the fusion of scientific curiosity, technological innovation, and a dedication to societal impact. Through her work in security R&D and her passion for mentoring emerging talent, she embodies Fujitsu’s commitment to building a secure and connected future. As cyber threats continue to evolve, the contributions of researchers like Haruhi will remain indispensable in safeguarding our digital world.
For more information about Fujitsu’s cutting-edge security research and initiatives to inspire the next generation, visit Fujitsu Global’s Research and Development portal.
