  High performance computing clusters operating in shared and batch mode pose
challenges for processing sensitive data. In the meantime, the need for secure
processing of sensitive data on HPC system is growing. In this work we present
a novel method for creating secure computing environments on traditional
multi-tenant high-performance computing clusters. Our platform as a service
provides a customizable, virtualized solution using PCOCC and SLURM to meet
strict security requirements without modifying the exist-ing HPC
infrastructure. We show how this platform has been used in real-world research
applications from different research domains. The solution is scalable by
design with low performance overhead and can be generalized for processing
sensitive data on shared HPC systems imposing high security criteria
