A company runs large computing jobs only during the overnight hours. To minimize the amount of capital investment in equipment, the company relies on the elastic computing services of a major cloud…

Loss of physical control is an inherent characteristic of cloud computing but is a general concern rather than the most direct or specific confidentiality risk in this elastic-resource scenario.

Distribution across multiple data centers raises jurisdictional concerns but does not represent the most direct confidentiality threat stemming from shared physical hardware reuse.

Cryptographic key transmission is a risk that can be mitigated with TLS and is not specific to the elastic or shared-hardware nature of the scenario described.

When virtual machines are destroyed in a shared cloud environment, residual data may persist on the underlying physical storage media and can potentially be read or scraped by other cloud customers whose workloads are subsequently allocated to the same hardware. This data remanence issue is unique to multi-tenant cloud environments and poses a direct threat to confidentiality. Physical media sanitization by the cloud provider is the only mitigation, and the customer has no control over this process.