From the course: ISC2 Certified Cloud Security Professional (CCSP) Cert Prep

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Data and media sanitization

Data and media sanitization

From the course: ISC2 Certified Cloud Security Professional (CCSP) Cert Prep

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Data and media sanitization

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- [Narrator] Welcome back to this lesson on data and media sanitization. In this lesson, we're really going to continue to drive home the importance of cryptography and key management in the cloud. We're specifically going to talk about a concept called overriding and then following that we'll talk about another term called cryptographic erasure, or in other words, crypto shredding. So overriding, once again, is not a concept that's unique to the cloud. This happens even on your everyday systems at home, where when you delete a file, over time eventually that file is overwritten, but until it's overwritten, that data still exists on your disk. The only thing that happens is that your disk just forgets where that data is stored, which tells your operating system that it's no longer accessible, but the data is still written to the disk until it's overwritten. This overriding just happens naturally over time, but it can be very unpredictable. And so in this case, if we imagine here that…

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