Earlier quoted context omitted.
Most data is recoverable albeit slow to do. It takes some very bad conditions or intentional actions to make data recovery impossible. Current high level standards for military/diplomatic data sanatisation are complete physical destruction of hard disks. Even linux tools like shred have given up saying they can actually delete data from disks due to how SSD's work these days.
SSDs are not magic. For shredding to be impossible the drives would have to have hidden capacity (and a lot of it, more than 1%). People often say, write levelling makes overwriting useless, but what if you overwrite the entire disk? How would you recover after something like this? Of course providing something like 10% of hidden extra capacity would extend the life of the drive significantly, but are manufacturers r…
Not sure how you missed it, as it's not a new thing. Straight from the horses mouth, if that helps: :)
https://www.kingston.com/en/blog/pc-performance/overprovisio...
Note that it's not just a Kingston thing, it's common across SSD manufacturers. Or at least with the major ones.