Boffins foul VM sandboxes with CPU-sniffing hack

So much for your sandbox US researchers at RSA, the University of Wisconsin and the University of North Carolina have used a malicious virtual machine to extract a cryptographic key from another virtual machine running on the same hardware.

The finding, published here (PDF), will not be welcomed by virtualisation companies or cloud computing providers, as it shows that the logical isolation between virtual machines may not be as secure as promised. Hypervisor vendors and cloud providers alike constantly talk up security, asserting that despite virtual machines sharing physical resources there’s no extra risk associated with this mode of computing.

Read more: Boffins foul VM sandboxes with CPU-sniffing hack • The Register