From owner-svn-src-all@FreeBSD.ORG Fri Oct 29 10:41:17 2010 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id CC2BE106564A; Fri, 29 Oct 2010 10:41:17 +0000 (UTC) (envelope-from alexander@leidinger.net) Received: from mail.ebusiness-leidinger.de (mail.ebusiness-leidinger.de [217.11.53.44]) by mx1.freebsd.org (Postfix) with ESMTP id 3D4138FC08; Fri, 29 Oct 2010 10:41:16 +0000 (UTC) Received: from outgoing.leidinger.net (p57B3A5FE.dip.t-dialin.net [87.179.165.254]) by mail.ebusiness-leidinger.de (Postfix) with ESMTPSA id C8E2C84400D; Fri, 29 Oct 2010 12:41:12 +0200 (CEST) Received: from webmail.leidinger.net (unknown [IPv6:fd73:10c7:2053:1::2:102]) by outgoing.leidinger.net (Postfix) with ESMTP id AE8C92403; Fri, 29 Oct 2010 12:41:04 +0200 (CEST) Received: (from www@localhost) by webmail.leidinger.net (8.14.4/8.13.8/Submit) id o9TAeI50090426; Fri, 29 Oct 2010 12:40:18 +0200 (CEST) (envelope-from Alexander@Leidinger.net) Received: from pslux.ec.europa.eu (pslux.ec.europa.eu [158.169.9.14]) by webmail.leidinger.net (Horde Framework) with HTTP; Fri, 29 Oct 2010 12:40:18 +0200 Message-ID: <20101029124018.584213anttm848lc@webmail.leidinger.net> Date: Fri, 29 Oct 2010 12:40:18 +0200 From: Alexander Leidinger To: Garrett Cooper References: <20101027212601.GA78062@freebsd.org> <4CC899C3.7040107@FreeBSD.org> <20101027214822.GA82697@freebsd.org> <4CC8A89D.5070909@delphij.net> <20101028152418.A916@besplex.bde.org> <20101028095538.24147119@ernst.jennejohn.org> <20101028182219.GA36559@freebsd.org> <20101028204849.GE46314@acme.spoerlein.net> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; DelSp="Yes"; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: 7bit User-Agent: Dynamic Internet Messaging Program (DIMP) H3 (1.1.4) X-EBL-MailScanner-Information: Please contact the ISP for more information X-EBL-MailScanner-ID: C8E2C84400D.A9C7F X-EBL-MailScanner: Found to be clean X-EBL-MailScanner-SpamCheck: not spam, spamhaus-ZEN, SpamAssassin (not cached, score=1.351, required 6, autolearn=disabled, RDNS_NONE 1.27, TW_SV 0.08) X-EBL-MailScanner-SpamScore: s X-EBL-MailScanner-From: alexander@leidinger.net X-EBL-MailScanner-Watermark: 1288953674.03558@07xK7Cb12xpE8YCyOOTOWw X-EBL-Spam-Status: No X-Mailman-Approved-At: Fri, 29 Oct 2010 11:22:01 +0000 Cc: Doug Barton , d@delphij.net, Ulrich =?utf-8?b?U3DDtnJsZWlu?= , Gary Jennejohn , src-committers@FreeBSD.org, Robert Watson , Bruce Evans , svn-src-head@FreeBSD.org, Alexander Best , svn-src-all@FreeBSD.org, Dag-Erling Smorgrav Subject: Re: svn commit: r214431 - head/bin/rm X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 29 Oct 2010 10:41:18 -0000 Quoting Garrett Cooper (from Thu, 28 Oct 2010 14:11:14 -0700): > Unfortunately it's implied superficially by the 3 pass tort; but as > most people who understand magnetic disks know, unless you completely > obliterate a disk, wipe over it with random data enough times, > whatever, the content is still on the disk and retrievable via various > methods... Can you please elaborate? I've read somewhere that someone (some kind of computer magazine) made a test of this (yes, to much somewhere and someone, sorry). They took a full harddisk with random data (random as in pictures, music, ...) and overwrote it once with zeros and gave it to one (or several) data rescue companies. The result was that for a price which makes still sense to pay for a business (like a bank), only a fraction of data (as in non-zero bytes) was recoverable, and that none of the original files, and no useful sequence of data, was recovered. For myself I kept the info that I've did not read it at an untrusty place and that for any normal person (even with some malicious intent to remove traces of the existence of something) overwritting a harddisk one time completely is enough. Bye, Alexander. -- Christ died for our sins, so let's not disappoint Him. http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137