Messages in this thread | | | Subject | RE: secure erasure of files? | Date | Tue, 12 Feb 2002 13:14:14 -0800 | From | "Torrey Hoffman" <> |
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IIRC, last time this topic came up, the best answer was:
Given modern disk hardware (block remapping) and operating system behavior, no, there is no way to securely delete files regardless of OS or filesystem.
(AFAIK, the transparent hardware block remapping cannot be detected or worked around in software - any software - but perhaps the IDE experts here know otherwise. )
If you don't want a sufficiently determined attacker to be able to read your data from the disk, don't write it.
The solution is to use encryption and make sure your data is never, ever written to disk unencrypted. In particular, use encrypted swap and encrypted loopback filesystems.
Torrey
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