AMD secure VM tech undone by DRAM meddling
Briefly

The researchers revealed that AMD Secure Encrypted Virtualization (SEV) can be bypassed with minimal hardware investment, significantly questioning its purported security measures.
Using a Raspberry Pi Pico, DDR socket, and a 9V battery, researchers exploited the SPD chip's vulnerabilities to bypass memory access restrictions of AMD's SEV-SNP.
Read at Theregister
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