The Gutmann's 1996 recommendation of 35-overwrites is quite specifically based on MFM/RLL disks, which are no longer used.The theory gets harder as drives get bigger. There are way more bits per drive than there were in 1996, meaning each bit has a smaller area, reducing the possibility of misalignment. The theory relies on the write head not being exactly lined up with the bit's area on the platter.It's only theoretical ( Gutmann 1996), and has never actually been successfully done (that we know of though if the government has that capability, they'd likely keep quiet about it).While theoretically possible to recover data after a random overwrite: The belief that you need to do multiple passes on modern drives is closer to voodoo than it is to anything based on fact. ![]() You only need one pass if that's not enough for you, then no amount of passes will be good enough, the only meaningful steps up would be using an external degousing device, and physically destroying the drive. Securely wiping a drive involves writing multiple passes of random data, The fallacy that data can be forensically recovered using anĮlectron microscope or related means needs to be put to rest. It is unlikely thatĪ recovered drive will have not been used for a period of time and the interaction ofĭefragmentation, file copies and general use that overwrites data areas negates anyĬhance of data recovery. Recovery even at the bit level, which does not reflect real situations. Written and then wiped on a raw unused drive for there to be any hope of any level of Further, there is a need for the data to have been Of data using electron microscopy is infeasible. Likelihood that any data would be recoverable from the drive. Even speculating on the possible recovery of an old drive, there is no ![]() This is simply a myth at this point that has no roots left in reality.Īlthough there is a good chance of recovery for any individual bit from a drive, theĬhances of recovery of any amount of data from a drive using an electron microscopeĪre negligible. There have been 0 recorded cases of data recovery in this manner (All 0's being written) on a modern density drive. r/HomeNetworking - Simpler networking advice. ![]() r/pfsense - for all things pfsense ('nix firewall) Might be able to find things useful for a lab. r/hardwareswap - Used hardware, swap hardware. r/buildapcsales - For sales on building a PC r/linux - All flavors of Linux discussion & news - not for the faint of heart! Try to be specific with your questions if possible. r/linux4noobs - Newbie friendly place to learn Linux! All experience levels. r/datacenter - Talk of anything to do with the datacenter here
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