ISC2 Exam CCSP Topic 1 Question 62 Discussion

We don't have physical ownership, control, or even access to the devices holding the data, so physical destruction, including melting, is not an option. Overwriting is a possibility, but it is complicated by the difficulty of locating all the sectors and storage areas that might have contained our data, and by the likelihood that constant backups in the cloud increase the chance we'll miss something as it's being overwritten. Cryptoshredding is the only reasonable alternative. Cold fusion is a red herring.