Quick Question, I've just been told of a secure wipe function with SSD drives, unsure of the accuracy. I cant really find much on-line about it, appreciate other peoples comments.
Apparently, SSD drives are soon to have a function (may already be available) in which when a disk is idol, the file system or operating system (not sure which level) securely wipes unallocated data blocks. Also, before writing data to a sector, the SSD disk will secure wipe all of that sector, removing any residing previous data in RAM and slack space.
Any validity in this?
Apparently, SSD drives are soon to have a function (may already be available) in which when a disk is idol, the file system or operating system (not sure which level) securely wipes unallocated data blocks.
I presume you are talking of the way Corsair/Samsung are addressing the PAGEs issues.
I.e. the "Performance Recovery Feature" or "Background Garbage Collection"
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Or of the "Indilinx Wiper Tool"
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Also, before writing data to a sector, the SSD disk will secure wipe all of that sector, removing any residing previous data in RAM and slack space.
Any validity in this?
I presume you are talking of the way PAGEs work on SSD?
I.e. the TRIM command
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jaclaz
Yes, the TRIM function means that when a file is deleted, it really is deleted. There was a thread on this a while back http//www.forensicfocus.com/index.php?name=Forums&file=viewtopic&t=4787&highlight=trim
Big implications for the way computer forensics investigations are carried out.
Thanks Jonathan. spot on.
This is a great read on SSDs. It's a long read but worth it IMHO.
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page 4 & 5 is what you're really looking for, where he breaks down how a SSD functions when it comes to r/w, and then explains more about TRIM support from both the hardware controller and built in OS support what you are now finding in Win7 and Win2008.