I'm Atri Bhattacharyya, a Senior Security Researcher at Oracle Software.
I work on GraalOS, an application deployment technology built on GraalVM Native Image for fast-starting, low-latency, low-memory cloud-native applications, with a focus on sandboxing and isolation.
I also work on GraalVM, a high-performance platform for native and polyglot applications, including polyglot sandboxing.
During my PhD in Computer Science at EPFL, I worked on secure and high-performance virtual memory compartmentalization, systematic kernel TOCTTOU protection, and speculative side-channel exploitation.
The work is systems-heavy, but free time is mostly spent outdoors, around mountains, or around rockets.
When it's sunny, I like to be outdoors swimming or hiking and generally being around nature.
I like space technology and rockets. In my free time, I play Kerbal Space Program, which usually looks something like this.
A few institutions that shaped how I think about systems, research, and engineering.
I started school life in my hometown of Kolkata. It was a time of few cares and a lot of enjoyment.
I graduated from the Indian Institute of Technology, Kanpur, where I developed both a love for technical depth and a broader enjoyment of engineering life.
I began graduate life in Switzerland at EPFL, first as a research assistant and later as a PhD student, finishing the doctorate in Computer Science in 2024.
A selection of recorded talks spanning secure microarchitectural design, compartmentalized architectures, kernel protection, and speculative side channels.
SecureCells introduces a compartmentalized architecture for secure and high-performance intra-address-space isolation.
A systematic approach to defending the kernel against TOCTTOU bugs without blocking userspace.
Chaining speculative gadgets to make transient execution attacks more expressive and more capable.
Port-contention side channels and speculative execution combined into a practical cross-process leakage attack.