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A comment on Apple M3 Ultra. Parent comment

Re:Apple M3 Ultra by astrange on Wednesday March 05, 2025 @08:01PM (#43274888)
The interesting difference between x86 and ARM is security, not performance, btw.
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Re:Apple M3 Ultra by ngneer on Thursday March 06, 2025 @11:27AM (#43281994)
Hardly. x86 and ARM follow similar security underpinnings and outcomes. ARM has TrustZone, x86 has TEEs. I cannot think of a single attack demonstrated on x86 and not on ARM or vice versa. Could you please cite one?
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Re:Apple M3 Ultra by astrange on Thursday March 06, 2025 @01:21PM (#43283322)
Who cares about TrustZone? x86 doesn't have PAC or MTE.
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Re:Apple M3 Ultra by ngneer on Monday March 10, 2025 @05:01PM (#43326040)
ARM/IoT community: https://community.arm.com/support-forums/f/architectures-and... https://community.arm.com/arm-community-blogs/b/internet-of-...

Security practitioners and academics: https://github.com/enovella/TEE-reversing/ https://media.ccc.de/v/36c3-10859-trustzone-m_eh_breaking_ar... https://www.blackhat.com/docs/us-15/materials/us-15-Shen-Att... https://i.blackhat.com/USA-19/Thursday/us-19-Peterlin-Breaki...

Sorry you could not cite an attack demonstrated on x86 and not on ARM or vice versa. Well, maybe TikTag (https://github.com/compsec-snu/tiktag) was demonstrated against ARM MTE, since you mention, and Pacman (https://pacmanattack.com/) against PAC. I was hoping for an actual response, no offense.

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