NSA HD wiping required 27 formats. Takes a long time and has to be pre programed unless you keep going up to each machine or have it linked like WiFi or lan etc. But at 7 formats its extremely hard to get anything from a hd. 1-3 and theirs alot of info still there. Think of it like Paper, pen, and an eraser. The more you erase it the harder it is to see whats written. Eventually you go through the paper lol. Not assuming your intelligence, just spreading intelligence to anyone who may see this lol
Honestly, wiping a spinning disk once will make it very unlikely to be read again. There might be a wisp of the original data there, but you're already at the point of requiring a world class forensics team. Drives in the last decade have also switched to shingled data to increase density, making the remnant signal even weaker. A couple passes of random data is enough to truly erase it.
Flash storage is a different story. The drives' on board controllers perform wear leveling, which means data that's been written over may still exist physically in the flash chip. That's on the order of 10% hidden capacity, so erasing a drive once may still leave 10% of data in tact. Erasing a few times will take care of that though. Accessing the raw flash memory is involved, but not too unreasonable for good forensics teams to do.
NSA HD wiping required 27 formats. Takes a long time and has to be pre programed unless you keep going up to each machine or have it linked like WiFi or lan etc. But at 7 formats its extremely hard to get anything from a hd. 1-3 and theirs alot of info still there. Think of it like Paper, pen, and an eraser. The more you erase it the harder it is to see whats written. Eventually you go through the paper lol. Not assuming your intelligence, just spreading intelligence to anyone who may see this lol
Honestly, wiping a spinning disk once will make it very unlikely to be read again. There might be a wisp of the original data there, but you're already at the point of requiring a world class forensics team. Drives in the last decade have also switched to shingled data to increase density, making the remnant signal even weaker. A couple passes of random data is enough to truly erase it.
Flash storage is a different story. The drives' on board controllers perform wear leveling, which means data that's been written over may still exist physically in the flash chip. That's on the order of 10% hidden capacity, so erasing a drive once may still leave 10% of data in tact. Erasing a few times will take care of that though. Accessing the raw flash memory is involved, but not too unreasonable for good forensics teams to do.
1 wipe is my wish even 5 i can still get plenty bud
^^This guy DRIVES :)