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I remove any media from my computers when I send to a repair shop. If any media fails, it should be destroyed. If you ever sells storage media, dd if=/dev/zero

I remove any media from my computers when I send to a repair shop. If any media fails, it should be destroyed. If you ever sells storage media, dd if=/dev/zero it; also consider that it may not be enough with some wear leveling SSD's. A few years ago, someone bought an used harddisk and got some private information of Brazil's then first lady Marcela Temer[0] and tried to blackmail her. He was later caught and imprisoned, but not everybody has the same luck. [0] http://g1.globo.com/tecnologia/noticia/2016/10/hd-comprado-ha-8-anos-e-pivo-da-clonagem-do-celular-de-marcela-temer.html http://g1.globo.com/tecnologia/noticia/2016/10/hd-comprado-h...

alekratz 5y ago
> dd if=/dev/zero it or `shred` it. Probably takes longer but more secure.
- wang_li 5y ago
  /dev/zero is perfectly fine for modern high density drives. If the drive in question is MFM or RLL from the '80s or '90s, then absolutely go bananas with 53 different bit patterns. But otherwise zeros is effective for nay hard drive made in the last decade. SSD has issues with wear leveling, so good luck wiping those. Though you're only going to have to worry about someone who is willing to disassemble the SSD device and read the chips individually.
megous 5y ago
It helps if you never store unencrypted data on the drive.