Boris Köpf

About

I am a scientist at Microsoft's Azure Research, where I work on techniques for tracking information flow in microarchitecture and agentic systems. Prior to joining Microsoft in November 2018, I was a tenured faculty at the IMDEA Software Institute, a postdoc at the Max Planck Institute for Software Systems, and a Ph.D. student at ETH Zurich.

Recent Work

Machine Learning Security and Privacy

Optimizing Agent Planning for Security and Autonomy (ICLR '26) [pdf]
Securing AI Agents with Information Flow Control (NeurIPS '26) [pdf]
Permissive Information-Flow Analysis for Large Language Models (TMLR '25) [pdf]
(more)

Microarchitectural Security

Principled Design of Indexing Functions for Memory Coloring (Usenix Security '26) [pdf]
Enter, Exit, Page Fault, Leak: Testing Isolation Boundaries for Microarchitectural Leaks (S&P '26) [pdf]
Principled Microarchitectural Isolation on Cloud CPUs (CCS '24) [pdf]
Gaussian Elimination of Side-channels: Linear Algebra for Memory Coloring (CCS '24) [pdf]
(more)

Upcoming Events

AISEC 2026, 19th ACM Workshop on Artificial Intelligence and Security (Speaker)
USS 2027, Usenix Security Symposium (PC member)
(more)

Contact

email: boris.koepf@microsoft.com