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Last updated: April 29, 2026
Multi-tenant cloud: same physical hardware, different tenants. Side channels exist. Cross-tenant attacks researched (Spectre/Meltdown class).
Multi-tenant cloud: same physical hardware, different tenants. Side channels exist. Cross-tenant attacks researched (Spectre/Meltdown class).
Most are theoretical or patched. Some succeed. The assumption “I’m the only tenant on this VM” is wrong; the assumption “tenant boundary is impervious” is sometimes wrong.
The mindset: high-stakes workloads → confidential computing or single-tenant variants where available.
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