Partha is Lecturer (Assistant Professor) in software security at University of Bristol. He is a member of core team of the UKRI National Research Centre on Privacy, Harm Reduction and Adversarial Influence Online (REPHRAIN). He is an alumni fellow of the NCSC funded Research Institute for Sociotechnical Cyber Security (RISCS). Partha advocates a realisation-based research paradigm to cyber security. He leads the development of the testbed operating system (TestbedOS) to test application security and privacy properties in a reproducible manner. He was the first to propose the adoption of Amartya Sen's Capability Approach for inclusive security engineering. This work has led to the first evidence base for a methodical shift for inclusive security engineering. He led the collaborative work with University of Cambridge that uncovered cloning attacks in E2EE messaging desktop clients. Partha was involved in the evaluation of six safety technologies to detect child sexually abusive material (CSAM) commissioned by the Home Office, UK. One of his papers won a distinguished paper award at IEEE SecDev 2024 and another won best paper for methodical contribution to build living knowledge sources, at CSCW 2023.