Sophos home utm limitations11/27/2023 …isn’t always quite as invisible as you might think, and may sometimes leak some or all of its content, even to processes that shouldn’t be able to see it.Īs the name suggests, cache memory (it’s pronounced cash, as in dollars and cents, not cachet, as in respect and prestige, if you’ve ever wondered), keeps special copies of data values from conventional RAM in hidden locations inside the CPU chip itself. We’re not going to try to explain the various forms of this attack at any length, because the technical details of how to take the measurements, and the mathematical modelling used to make inferences from those measurements, are complex.īut the core of the problem, if you will pardon the partial pun, is that the cache memory that’s buried inside modern processor chips, intended to provide an invisible and automatic performance boost… The researchers behind this new paper are Andreas Kogler, Jonas Juffinger, Lukas Giner, Martin Schwarzl, Daniel Gruss and Stefan Mangard from Graz University in Austria, and Lukas Gerlach and Michael Schwarz of the CISPA Helmholtz Center for Information Security in Germany. Collide cached data, and measure the power required
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