ISC2 Certified Cloud Security Professional (CCSP) Practice Question
During an internal risk assessment, a cloud security architect reviews how block-level volumes are assigned to virtual machines in a multitenant IaaS. After one customer deletes a volume, the same physical blocks may later be mapped to a different tenant without being cryptographically wiped. Which specific threat to cloud storage types should the architect flag for treatment?
Metadata poisoning of object storage buckets
Data remanence resulting from improper sanitization of reused block storage
Packet sniffing against storage network traffic
Unauthorized hypervisor snapshots of virtual machine memory
The situation describes storage blocks being re-provisioned to another tenant while residual information from the previous tenant may still reside on the media. This is the classic cloud storage threat of data remanence. Without secure sanitization (for example, cryptographic erase or multiple overwrites) the next tenant could potentially recover those remnants. The other options involve different threat vectors: sniffing targets data in motion, metadata poisoning attacks object storage semantics, and hypervisor snapshots relate to volatile memory exposure rather than residual data on de-allocated block storage.
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ISC2 Certified Cloud Security Professional (CCSP)
Cloud Data Security
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