Date: Mon, 19 Jun 2006 13:49:19 +0200 From: des@des.no (Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?=) To: "R. B. Riddick" <arne_woerner@yahoo.com> Cc: freebsd-security@freebsd.org, Nick Borisov <neiro21@gmail.com> Subject: Re: memory pages nulling when releasing Message-ID: <86veqxv000.fsf@xps.des.no> In-Reply-To: <20060619101133.31660.qmail@web30307.mail.mud.yahoo.com> (R. B. Riddick's message of "Mon, 19 Jun 2006 03:11:33 -0700 (PDT)") References: <20060619101133.31660.qmail@web30307.mail.mud.yahoo.com>
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"R. B. Riddick" <arne_woerner@yahoo.com> writes: > Dag-Erling Sm=F8rgrav <des@des.no> writes: > > You cannot read the content of powered-off DRAM. > Yes, that it is true. _I_ cannot read powered-off DRAM... But my > feathered friends beyond the seven mountains with bird-like heads > and big muscled chests and arms and legs and a super-duper-computer > (abbr.: CIA) could possibly do that... I very much doubt it. DRAM needs to be continuously refreshed, and loses its state within milliseconds of losing power. > At least I saw that in TV (CSI Wanne-Eickel or so), how they read from a > overwritten hard disc shreddered with a "laser"... Umm, first, CSI is fiction; second, unlike DRAM, a hard disk is designed to retain information when power is switched off. DES --=20 Dag-Erling Sm=F8rgrav - des@des.no
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