Power side channels exploit leakage that is fundamentally a result of how we build processors. Over the recent years, these attacks evolved to target generalpurpose desktop and server CPUs purely from software.

In this talk, we explore this evolution to its most recent addition: Collide+Power, a novel technique to exploit the fundamental way we share components in modern generalpurpose CPUs. In contrast to previous work, Collide+Power does not target specific programs or algorithms but the underlying CPU hardware. This advance in softwarebased power side channels echoes the discovery of Meltdown and Spectre — where similarly, the underlying hardware provided unforeseen attack possibilities....

By: Andreas Kogler

Full Abstract and Presentation Materials:
https://www.blackhat.com/eu23/briefi...