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	<title>(A)bort, (R)etry, (I)gnore: Perspectives on Information Security &#187; Technical Article</title>
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	<description>Perspectives on Information Security and Intrusion Defense</description>
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		<title>Enumerating Three Choices</title>
		<link>http://freshdefense.net/blog/2011/01/29/enumerating-three-choices/</link>
		<comments>http://freshdefense.net/blog/2011/01/29/enumerating-three-choices/#comments</comments>
		<pubDate>Sat, 29 Jan 2011 05:37:33 +0000</pubDate>
		<dc:creator>xoren</dc:creator>
				<category><![CDATA[Technical Article]]></category>
		<category><![CDATA[C code]]></category>
		<category><![CDATA[counting]]></category>
		<category><![CDATA[ternary]]></category>

		<guid isPermaLink="false">http://freshdefense.net/blog/?p=223</guid>
		<description><![CDATA[I was recently posed a question by a psychologist friend of mine. She needed to enumerate all possible answers to a set of 20 questions. Each individual question could have three answers. She then planned to count the actual frequency of answers from the test sample (say, N~=100) and run this result through some other [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Slow Curtain of Death</title>
		<link>http://freshdefense.net/blog/2011/01/18/slow-curtain-of-death/</link>
		<comments>http://freshdefense.net/blog/2011/01/18/slow-curtain-of-death/#comments</comments>
		<pubDate>Tue, 18 Jan 2011 23:29:16 +0000</pubDate>
		<dc:creator>xoren</dc:creator>
				<category><![CDATA[Complaints]]></category>
		<category><![CDATA[Technical Article]]></category>

		<guid isPermaLink="false">http://freshdefense.net/blog/?p=215</guid>
		<description><![CDATA[I should rename this blog &#8220;Complaints about Apple Mac OS X&#8221;. Apple has their own alternative to Microsoft&#8217;s &#8220;Blue Screen of Death.&#8221; I call it the &#8220;Slow Curtain of Death&#8221; &#8212; the machine suddenly stops responding, and a line proceeds from the top of the screen to the bottom, dimming the display and displaying a [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>Early October Self-Induced DoS</title>
		<link>http://freshdefense.net/blog/2010/10/09/early-october-self-induced-dos/</link>
		<comments>http://freshdefense.net/blog/2010/10/09/early-october-self-induced-dos/#comments</comments>
		<pubDate>Sat, 09 Oct 2010 22:08:46 +0000</pubDate>
		<dc:creator>xoren</dc:creator>
				<category><![CDATA[Technical Article]]></category>
		<category><![CDATA[blog]]></category>
		<category><![CDATA[debugging]]></category>
		<category><![CDATA[DoS]]></category>
		<category><![CDATA[mysql]]></category>
		<category><![CDATA[php]]></category>

		<guid isPermaLink="false">http://freshdefense.net/blog/?p=208</guid>
		<description><![CDATA[I recently updated this blog from the WordPress control panel. All it takes to update is a single mouse click. This action was ill-advised, uniformed, and generally ignorant. First, I did not follow the advice in the upgrade dialog that urged me to back up my content. Second, when the update finished, none of my [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Mini-Dissection of IRS Phishing Spam</title>
		<link>http://freshdefense.net/blog/2010/09/10/mini-dissection-of-irs-phishing-spam/</link>
		<comments>http://freshdefense.net/blog/2010/09/10/mini-dissection-of-irs-phishing-spam/#comments</comments>
		<pubDate>Fri, 10 Sep 2010 17:03:58 +0000</pubDate>
		<dc:creator>xoren</dc:creator>
				<category><![CDATA[Technical Article]]></category>

		<guid isPermaLink="false">http://freshdefense.net/blog/?p=198</guid>
		<description><![CDATA[Four days ago I received an email from tax-refunds@irs.gov. A selection of interesting headers from the message appears below (sensitive information, such as my email address, elided). You&#8217;ll note two things. First, this email came to one of my U of C addresses, but it purports to be from the IRS. Why would the IRS [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Shutting Down the Internet</title>
		<link>http://freshdefense.net/blog/2010/07/08/shutting-down-the-internet/</link>
		<comments>http://freshdefense.net/blog/2010/07/08/shutting-down-the-internet/#comments</comments>
		<pubDate>Thu, 08 Jul 2010 05:16:27 +0000</pubDate>
		<dc:creator>xoren</dc:creator>
				<category><![CDATA[Current Events]]></category>
		<category><![CDATA[Editorial]]></category>
		<category><![CDATA[Technical Article]]></category>
		<category><![CDATA[Internet]]></category>
		<category><![CDATA[internet shutdown]]></category>
		<category><![CDATA[ISP]]></category>
		<category><![CDATA[politifact]]></category>
		<category><![CDATA[routing]]></category>

		<guid isPermaLink="false">http://freshdefense.net/blog/?p=169</guid>
		<description><![CDATA[I was recently cited, among others (including Sal Stolfo and Chris Kruegel), for a Politifact article by Lukas Pleva on whether it was possible for private industry to shut down the Internet as a protection measure during some large-scale cyber attack with or without some form of government involvement: The article is here: Glenn Beck [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
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		<title>A (Simulated) Turing Machine</title>
		<link>http://freshdefense.net/blog/2010/04/06/a-simulated-turing-machine/</link>
		<comments>http://freshdefense.net/blog/2010/04/06/a-simulated-turing-machine/#comments</comments>
		<pubDate>Tue, 06 Apr 2010 20:04:57 +0000</pubDate>
		<dc:creator>xoren</dc:creator>
				<category><![CDATA[Technical Article]]></category>
		<category><![CDATA[Turing Machine]]></category>

		<guid isPermaLink="false">http://freshdefense.net/blog/?p=153</guid>
		<description><![CDATA[Very neat&#8230; (a simulation of) a Turing Machine: http://aturingmachine.com/index.php]]></description>
		<wfw:commentRss>http://freshdefense.net/blog/2010/04/06/a-simulated-turing-machine/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Trusting SSL Certs</title>
		<link>http://freshdefense.net/blog/2010/03/18/trusting-ssl-certs/</link>
		<comments>http://freshdefense.net/blog/2010/03/18/trusting-ssl-certs/#comments</comments>
		<pubDate>Thu, 18 Mar 2010 13:20:05 +0000</pubDate>
		<dc:creator>xoren</dc:creator>
				<category><![CDATA[Technical Article]]></category>
		<category><![CDATA[certificates]]></category>
		<category><![CDATA[firefox]]></category>
		<category><![CDATA[SSL]]></category>
		<category><![CDATA[trust]]></category>

		<guid isPermaLink="false">http://freshdefense.net/blog/?p=141</guid>
		<description><![CDATA[The problem of user &#8220;click-through&#8221; of SSL certificate warnings when connecting to websites using SSL/TLS is an old, well-recognized one. Users have little information with which to make a meaningful trust decision. I recently visited a Web site where I had to submit reviews, and the connection was HTTPS. Firefox&#8217;s new in-browser dialog warning about [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Counterfeit Hardware</title>
		<link>http://freshdefense.net/blog/2010/02/17/counterfeit-hardware/</link>
		<comments>http://freshdefense.net/blog/2010/02/17/counterfeit-hardware/#comments</comments>
		<pubDate>Wed, 17 Feb 2010 04:41:48 +0000</pubDate>
		<dc:creator>xoren</dc:creator>
				<category><![CDATA[Technical Article]]></category>

		<guid isPermaLink="false">http://freshdefense.net/blog/?p=129</guid>
		<description><![CDATA[An interesting detective story dealing with hardware disassembly to check the provenance of micro SD cards: http://www.bunniestudios.com/blog/?p=918 Not exactly trojan hardware, but a good case illustrating the actual level of trustworthiness of real hardware nonetheless, and it includes an interesting foray into the economics of micro SD production near the end. [I picked this link [...]]]></description>
		<wfw:commentRss>http://freshdefense.net/blog/2010/02/17/counterfeit-hardware/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>System Forensics</title>
		<link>http://freshdefense.net/blog/2010/02/12/system-forensics/</link>
		<comments>http://freshdefense.net/blog/2010/02/12/system-forensics/#comments</comments>
		<pubDate>Fri, 12 Feb 2010 23:17:18 +0000</pubDate>
		<dc:creator>xoren</dc:creator>
				<category><![CDATA[Technical Article]]></category>

		<guid isPermaLink="false">http://freshdefense.net/blog/?p=125</guid>
		<description><![CDATA[RFC 3227 is a handy resource for students interested in the challenges of beginning the recovery process: http://www.faqs.org/rfcs/rfc3227.html I hadn&#8217;t known about this until reviewing a paper recently. This (short) RFC contains some guidelines for performing forensics on a compromised computer system. Nothing earth-shattering, but it does provide a nice collection of principles. Why do [...]]]></description>
		<wfw:commentRss>http://freshdefense.net/blog/2010/02/12/system-forensics/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>CPU DoS Attacks</title>
		<link>http://freshdefense.net/blog/2009/09/08/cpu-dos-attacks/</link>
		<comments>http://freshdefense.net/blog/2009/09/08/cpu-dos-attacks/#comments</comments>
		<pubDate>Wed, 09 Sep 2009 00:12:49 +0000</pubDate>
		<dc:creator>xoren</dc:creator>
				<category><![CDATA[Technical Article]]></category>
		<category><![CDATA[CPU DoS]]></category>
		<category><![CDATA[hardware security]]></category>

		<guid isPermaLink="false">http://freshdefense.net/blog/?p=59</guid>
		<description><![CDATA[Also known as CPU starvation or CPU consumption attacks, such attacks present a difficult challenge to commodity computing platforms: users typically believe that commodity hardware is a high-assurance product and that software errors present more of a threat to reliability, quality of service, or security. A Denial-of-Service (DoS) attack on a Central Processing Unit (CPU) [...]]]></description>
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		<slash:comments>0</slash:comments>
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