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Are there any data remanence issues with flash storage devices?
Let's assume there is some sensitive material on the drive, that we wouldn't want to be on there even if we deleted.
From a file system perspective, we know that a "delete" is not always a full delete. For that reason, it's important to overwrite all of the contents.
From a physical medium perspective, the older style disks were susceptible to having data recoverable, even after a single pass of all 0s or 1s. As I understand it, this is the key reason to do multi-pass overwrites.
Are Flash based drives susceptible to the same or similar forensic analysis of a single pass wipe?
