[[Infowarrior] - NSA Said to Have Used Heartbleed Bug for Years]
Scott Howard
scott at doc.net.au
Tue Apr 15 16:02:46 UTC 2014
On Tue, Apr 15, 2014 at 6:56 AM, Matthew Black <Matthew.Black at csulb.edu>wrote:
> Seriously? When files are deleted, their sectors are simply released to
> the free space pool without erasing their contents. Allocation of disk
> sectors without clearing them gives users/programs access to file contents
> previously stored by other users/programs.
>
No worthwhile filesystem will allow you to read a block of disk that you
haven't already written to. Once you've written to it, any existing data
that was there is overwritten.
The same isn't true for block-level access, but as a rule that requires
admin access, and once you have that all bets are off...
Scott
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