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Pastimes : Computer Learning
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To: Gottfried who wrote (569)10/30/1998 9:40:00 PM
From: Spots  Read Replies (1) of 110648
 
>>if an area on the disk is ACTUALLY overwritten with
different
data, you can consider prior data erased.

You and I would consider it so, but there are actually
NSA specifications that require overwriting multiple
times (like hundreds) before a disk is considered clean.
Although we may yuk (in fact, yuk yuk), there ARE
conceivably ways to retrieve a previous bit pattern
from a medium, given enough patience and money.

Spots
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