It was a pleasure to present #CounterSEVeillance at #NDSSSymposium2025 today. Thanks to everyone attending, also for the interesting and nice discussion after the talk! 🙂

Announcing #CounterSEVeillance, a novel attack on AMD SEV-SNP inferring control-flow information and operand properties from performance-counter data with single-instruction resolution.
We present 4 case studies with attacks on RSA, TOTP verification and HQC.
Thanks to @hweissi, @supersingular and @lavados for the amazing collaboration!
You can read the full paper (to appear at #NDSS2025) here: https://stefangast.eu/papers/counterseveillance.pdf