News for hackers. Stuff that matters.

A comment on Zenbleed. Parent comment

Re:Zenbleed by insanitybit on Monday July 24, 2023 @11:19PM (#36857452)
Yes but the Firecracker VMs are pinned to specific cores. So no two tenants never share a CPU core. Other than Rowhammer, has there been a hardware vulnerability of this nature that has worked x-core? I don't recall.

Still, I think that if your company is handling user data it's worth seriously considering dedicated instances for any service that encounters plaintext user information.

[ Parent | on HN ]
Re:Zenbleed by fulafel on Tuesday July 25, 2023 @04:32AM (#36859539)
Interesting. Physical cores or SMT virtual cores? Is there a link to their docs about this?
[ Parent | on HN ]
Re:Zenbleed by insanitybit on Tuesday July 25, 2023 @11:01AM (#36863312)
I honestly think I only ever saw an AWS Security Eng tweet about it lol sorry
[ Parent | on HN ]
Re:Zenbleed by skeggse on Tuesday July 25, 2023 @04:28PM (#36868900)
https://docs.aws.amazon.com/whitepapers/latest/security-desi... seems like the relevant docs?
[ Parent | on HN ]