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	<title>Security Pie &#187; theory</title>
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	<link>http://securitypie.com</link>
	<description>The ramblings of three security curmudgeons</description>
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		<title>Are We There Yet?</title>
		<link>http://securitypie.com/are-we-there-yet/</link>
		<comments>http://securitypie.com/are-we-there-yet/#comments</comments>
		<pubDate>Tue, 09 Feb 2010 23:59:48 +0000</pubDate>
		<dc:creator>sharon</dc:creator>
				<category><![CDATA[Risk Management]]></category>
		<category><![CDATA[Security Business]]></category>
		<category><![CDATA[Strategy]]></category>
		<category><![CDATA[theory]]></category>
		<category><![CDATA[Security]]></category>

		<guid isPermaLink="false">http://securitypie.com/?p=740</guid>
		<description><![CDATA[RSA Conference, the biggest security event of the year will take place next month. IMO now is a good time to review how we are doing as an industry, fulfilling our destination (that is, securing). On Jone 2003, Gartner declared that IDS are dead and &#8220;recommends that enterprises redirect the money they would have spent on IDS [...]]]></description>
			<content:encoded><![CDATA[<p>RSA Conference, the biggest security event of the year will take place next month.</p>
<p>IMO now is a good time to review how we are doing as an industry, fulfilling our destination (that is, securing).</p>
<p>On Jone 2003, Gartner declared that IDS are dead and &#8220;recommends that enterprises redirect the money they would have spent on IDS toward defense applications such as those offered by thought-leading firewall vendors that offer both network-level and application-level firewall capabilities in an integrated product.&#8221;</p>
<p>6.5  years later, are we there yet?</p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>How do you secure carrier pigeons?</title>
		<link>http://securitypie.com/how-do-you-secure-carrier-pigeons/</link>
		<comments>http://securitypie.com/how-do-you-secure-carrier-pigeons/#comments</comments>
		<pubDate>Sat, 09 May 2009 03:40:21 +0000</pubDate>
		<dc:creator>arikb</dc:creator>
				<category><![CDATA[theory]]></category>
		<category><![CDATA[thoughts]]></category>
		<category><![CDATA[Fiction]]></category>

		<guid isPermaLink="false">http://securitypie.com/how-do-you-secure-carrier-pigeons/</guid>
		<description><![CDATA[We have people with keen enough an eye and an ear to detect these pigeons. Trained as they are, they sit in pairs in the highest tower of your castle, ever watching for pigeons. Not all pigeons, your majesty, only what we call “egress” pigeons, who fly in a direction clearly meant to depart your [...]]]></description>
			<content:encoded><![CDATA[<p>We have people with keen enough an eye and an ear to detect these pigeons. Trained as they are, they sit in pairs in the highest tower of your castle, ever watching for pigeons. Not all pigeons, your majesty, only what we call “egress” pigeons, who fly in a direction clearly meant to depart your kingdom. Targeting only “egress” pigeons is easier because it saves on the drugged arrows they use to fell them.</p>
<p>Then once a pigeon is felled, the trained hounds are released. These specially trained hounds find the pigeon and bring it back into your castle unharmed and intact. Then, the pigeon is take to a special room where it is left to recover the effect of the drug. If the message carries the royal seal, which only your majesty wears, then it is reattached to the pigeon and sent &#8211; while a cryptologist reads the rest of the messages and deliver it to your majesty after it has been duly decoded.</p>
<p>After you get to trust our cryptologists, you may order them to perform an action on your behest your majesty, for example, to burn the message so it never reaches its destination, or to send it unharmed, based on its content. Some messages may not be of interest to your majesty, and may be taken to one of your trusted viziers for consultation to await their decision, so your majesty may be free to rule the kingdom. Others may be delivered to your majesty directly, while others may just be copied verbatim and saved for later reference.</p>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Why I miss the Soviet Union</title>
		<link>http://securitypie.com/why-i-miss-the-soviet-union/</link>
		<comments>http://securitypie.com/why-i-miss-the-soviet-union/#comments</comments>
		<pubDate>Thu, 13 Nov 2008 17:32:32 +0000</pubDate>
		<dc:creator>assafl</dc:creator>
				<category><![CDATA[general]]></category>
		<category><![CDATA[identity]]></category>
		<category><![CDATA[Politics]]></category>
		<category><![CDATA[theory]]></category>
		<category><![CDATA[thoughts]]></category>

		<guid isPermaLink="false">http://securitypie.com/?p=249</guid>
		<description><![CDATA[OK. So this blog is both not about security at all and all about security at the same time. That is like catching two stones with one bird. My inbox today carried a fresh bit of news from CIO magazine. An opinion column by Eric Lundquist, labelled “We need a national CIO, not a CTO” stipulated [...]]]></description>
			<content:encoded><![CDATA[<p>OK. So this blog is both not about security at all and all about security at the same time. That is like catching two stones with one bird.</p>
<p>My inbox today carried a fresh bit of news from CIO magazine. An opinion column by Eric Lundquist, labelled <a href="http://www.cioinsight.com/c/a/Opinion/We-Need-A-National-CIO-Not-A-CTO/?kc=CIOMINEPNL11132008">“We need a national CIO, not a CTO” </a>stipulated that CIO are a better match for US national role than a CTO. To paraphrase Lundquist’s message, CIO’s are firmly planted in the business realities of the day, while CTO focus on technologies “looking for uses”. Reminds me of the old adage of “legs firmly planted” vs. “head in the clouds”.</p>
<p>I firmly disagree.</p>
<p><span id="more-249"></span></p>
<p>Now I understand that I read CIO magazine and that is why I received this message. I also assume that by the nature of politics, all kinds of special interest groups raise their heads, so I would expect a similarly opinioned “Shepard’s Weekly” would have discussed a similar topic ”We need a national shepard, not a CTO” and that the international association of circus performers would like to propose “We need a national court jester, not a CTO”.</p>
<p>Joking aside, Mr. Lundquist put forth some good arguments. He stipulated that CIO can better manage a project. That CIOs hold the business first and technology second. To quote “Technologists are great at creating new companies, new products and new markets. They are not great at orchestrating lots of conflicting opinions, managing projects or – especially in the political realm – settling on the best possible choice given budget constraints and political realities.”. Mr. Lundquist is correct, but altogether misses the point.</p>
<p>YAPM (Yet another project manager) is NOT what the US needs. In a former life I frequented Crystal City often. There were many project managers there. 25% of them were very good. 50% were mediocre. 25% were awful. But there were lots of them. They crammed public transportation, caused the beltway to jam, and filled the cafeteria’s at lunch. You could not throw a rock without hitting a project manager for some obscure government entity.</p>
<p>The US needs a future. To be driven, its future needs to be based on a seemingly unachievable target. We had been driven like that many times in the past. The US developed the trasistor and the chip (which 40 years later made our lives mobile). The external combustion engine for the torpedo (which crammed power into tiny spaces). Composite materials for space exploration (and which later improved our golf and tennis games). It was a government sponsored program (DARPA) that created the Internet. Not Google, nor Microsoft, nor Facebook. Nor was it rear view mirror preening dudes on Sand Hill road on their way to their ranches outside Bozeman in a well appointed G5. No. It was the government. And for all the wrong reasons. A lot of it was due to the US government chasing the Soviet’s dream of ruling space. How I miss the Soviet’s for that reason (if only for that reason!).</p>
<p>While both the technology industry and the venture capital industry oppose “leapfrog” technologies (they can ”eat your cheese” and thus risky for business and are difficult to predict and thus risky for VCs, respectively), the US government should indeed drive technology forward. But not on a predictable, linear trajectory, as Sand Hill road does with social networking and other &#8220;me too&#8221; technologies, but in a hockey stick fashion. Sending a man to mars. Cloning sheep. <span style="text-decoration: underline;">Really </span>analyzing our climate. Teleportation. Whatever.</p>
<p>For that you need a visionary CTO with a set of <span style="text-decoration: underline;">brass balls</span>. Not a Cisco kowtowing CIO. And to address Mr. Lundquist’s example of the revolving doors for the national cybersecurity czar: Nor does the standard Symantec or McAfee worshipping CISO make a good cybersecurity czar.</p>
<p>And to conclude, Eric Lundquist is, however correct (even if for the wrong reason) in identifying the fallacy in the current dredge of proposed CEOs. None of the proposed CEO’s is a visionary. Sure, they navigated their ships admirably through the murky tempramental waters of the American economy, but none have really shown a vision for disruptive innovation. They have been keen followers, seeking the market scouts and then bearing down upon their cheese with their mighty heft. Cheese snatching should never be confused with vision and innovation. For that you need the likes of J. Craig Venter or even some “down to earth” science fiction writers. People who’d invest even if the future is still murky and the benefits, for now, unclear.</p>
<p>/al</p>
<p>PS &#8211; The opinions expressed are my own. Not my employer’s, Barack Obama’s, nor Cisco’s. As an entrepeneur and business man, I like my customers to stick with me. I dislike churn, except my competitor’s churn. I therefore dislike the term disruptive.</p>
<p>But I also know that healthcare for generations X Y and Z, as well as fuel costs, etc. are liable to eat up a vast chunk of our GDP, and the only way to prevent that is to increase our GDP. To increase GDP we need disruptive technologies, techniques and methodologies. I also know that the linear thinking preferred by the bankers that manage industry in general favors baby steps within established markets and does not foster disruptive technology.</p>
<p>Hence the opinion piece.</p>
]]></content:encoded>
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		<slash:comments>5</slash:comments>
		</item>
		<item>
		<title>101 Uses for Data Leak Prevention</title>
		<link>http://securitypie.com/101-uses-for-data-leak-prevention/</link>
		<comments>http://securitypie.com/101-uses-for-data-leak-prevention/#comments</comments>
		<pubDate>Tue, 21 Oct 2008 22:45:56 +0000</pubDate>
		<dc:creator>assafl</dc:creator>
				<category><![CDATA[Risk Management]]></category>
		<category><![CDATA[Security Business]]></category>
		<category><![CDATA[theory]]></category>
		<category><![CDATA[plagurize]]></category>
		<category><![CDATA[school]]></category>

		<guid isPermaLink="false">http://securitypie.com/?p=226</guid>
		<description><![CDATA[Ok &#8211; So I have a vested interest in DLP. Sue me. But here is a real cool use of DLP to detect plagurizing of dissertations: http://ondlp.com/?p=9#respond Notes: 1. Really cool use of the fingerprinting technology 2. I did not know that Dave&#8217;s wife was a professor /al]]></description>
			<content:encoded><![CDATA[<p>Ok &#8211; So I have a vested interest in DLP. Sue me.</p>
<p>But here is a real cool use of DLP to detect plagurizing of dissertations:<br />
<a href="http://ondlp.com/?p=9#respond">http://ondlp.com/?p=9#respond</a></p>
<p>Notes:<br />
1. Really cool use of the fingerprinting technology<br />
2. I did not know that Dave&#8217;s wife was a professor <img src='http://securitypie.com/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' /> </p>
<p>/al</p>
]]></content:encoded>
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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>What is all this about lie and other detectors?</title>
		<link>http://securitypie.com/what-is-all-this-about-lie-and-other-detectors/</link>
		<comments>http://securitypie.com/what-is-all-this-about-lie-and-other-detectors/#comments</comments>
		<pubDate>Wed, 15 Oct 2008 02:38:16 +0000</pubDate>
		<dc:creator>assafl</dc:creator>
				<category><![CDATA[classification]]></category>
		<category><![CDATA[Risk Management]]></category>
		<category><![CDATA[theory]]></category>

		<guid isPermaLink="false">http://securitypie.com/?p=203</guid>
		<description><![CDATA[In his latest posting (http://securitypie.com/workers-more-prone-to-lie-in-email-so-what/), Sharon refers to a hypothetical detector for lying over email. Now such things exist, and have existed for quite some time. Plotters connected to sensors have been used as lie detectors since its evolutionary invention spanning some 40 years and multiple devices during the turn of the last century. Every [...]]]></description>
			<content:encoded><![CDATA[<p style="margin: 0in 0in 10pt;">In his latest posting (<a href="http://securitypie.com/workers-more-prone-to-lie-in-email-so-what/">http://securitypie.com/workers-more-prone-to-lie-in-email-so-what/</a>), Sharon refers to a hypothetical detector for lying over email. Now such things exist, and have existed for quite some time. Plotters connected to sensors have been used as lie detectors since its evolutionary invention spanning some 40 years and multiple devices during the turn of the last century. Every so often a handheld lie detector would appear on the classified ads of some local newspaper or one of the inflight magazines or skymall.</p>
<p style="margin: 0in 0in 10pt;">Now everyone knows (or should know) that the jury is out about the accuracy of lie detectors. Now why is that significant?</p>
<p style="margin: 0in 0in 10pt;">There are 4 possible outcomes of a lie detector test:</p>
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<p style="margin: 0in 0in 0pt; line-height: normal;">
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<td style="padding: 0in 5.4pt; width: 2.75in; background-color: transparent;" width="264" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Did not lie</p>
</td>
<td style="padding: 0in 5.4pt; width: 2.7in; background-color: transparent;" width="259" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Lied</p>
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</tr>
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<td style="padding: 0in 5.4pt; width: 1.2in; background-color: transparent;" width="115" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Not caught</p>
</td>
<td style="padding: 0in 5.4pt; background: #92d050 none repeat scroll 0% 0%; width: 2.75in;" width="264" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Not lied and not caught (0,0)</p>
</td>
<td style="padding: 0in 5.4pt; background: red none repeat scroll 0% 0%; width: 2.7in;" width="259" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Lied and Not Caught (1,0)</p>
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</tr>
<tr style="mso-yfti-irow: 2; mso-yfti-lastrow: yes;">
<td style="padding: 0in 5.4pt; width: 1.2in; background-color: transparent;" width="115" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Caught</p>
</td>
<td style="padding: 0in 5.4pt; background: red none repeat scroll 0% 0%; width: 2.75in;" width="264" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Not lied but caught (0,1)</p>
</td>
<td style="padding: 0in 5.4pt; background: #92d050 none repeat scroll 0% 0%; width: 2.7in;" width="259" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Lied and caught (1,1)</p>
</td>
</tr>
</tbody>
</table>
<p style="margin: 0in 0in 10pt;"><span id="more-203"></span></p>
<p style="margin: 0in 0in 10pt;">In the case of lie detection testing, the consequences of the “True results”:(0,0) and (1,1), the outcomes are appropriate. For example, the thief was caught and made to serve time. Or the person was acquitted or allowed to continue the hiring process.</p>
<p style="margin: 0in 0in 10pt;">However for the “false results”: (1,0) and (0,1), the outcomes can be devastating. Some of the most damaging spies that the world has ever seen (e.g. Aldrich Ames, Robert Hansen; See the rather opinionated <a href="https://antipolygraph.org/cgi-bin/forums/YaBB.pl?num=1123602616">https://antipolygraph.org/cgi-bin/forums/YaBB.pl?num=1123602616</a>) routinely passed lie detector tests. Similarly, try to imagine a husband that just happens to be overly anxious about participating in the Fox&#8217;s &#8221;The Moment of Truth&#8221; and is mistakenly ousted as having an extramarital affair. Try to imagine explaining that one to a tearful significant other (BTW – one reason to object to programmers’ decisions to broadcast these shows to a public that is ignorant of detection theorem and statistics).</p>
<p style="margin: 0in 0in 10pt;">The dilemma for security: Since a person passed a lie detector test can you assume they are trustworthy? Can you take considerably less care in securing their access to resources?</p>
<p style="margin: 0in 0in 10pt;">The science of detecting a certain quantity or quality of a signal from an environment of surrounding noise is called Detection Theory. It has been around for ages, was developed initially for the development of the radar <a href="http://en.wikipedia.org/wiki/Detection_theory">(http://en.wikipedia.org/wiki/Detection_theory</a>). It is what I concentrated on for the first ten years of my engineering life in designing and evaluating SONAR and other detection systems.</p>
<p style="margin: 0in 0in 10pt;">In Detection Theory, the same outcomes as in the lie detector diagram above are used:</p>
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<p style="margin: 0in 0in 0pt; line-height: normal;">
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<td style="padding: 0in 5.4pt; width: 171pt; background-color: transparent;" width="228" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">No Signal</p>
</td>
<td style="padding: 0in 5.4pt; width: 198.9pt; background-color: transparent;" width="265" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Signal</p>
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<tr style="mso-yfti-irow: 1;">
<td style="padding: 0in 5.4pt; width: 108.9pt; background-color: transparent;" width="145" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Not Detected</p>
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<td style="padding: 0in 5.4pt; background: #92d050 none repeat scroll 0% 0%; width: 171pt;" width="228" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">True Negative (0,0)</p>
</td>
<td style="padding: 0in 5.4pt; background: red none repeat scroll 0% 0%; width: 198.9pt;" width="265" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">False Negative (1,0)</p>
</td>
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<tr style="mso-yfti-irow: 2; mso-yfti-lastrow: yes;">
<td style="padding: 0in 5.4pt; width: 108.9pt; background-color: transparent;" width="145" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Detected</p>
</td>
<td style="padding: 0in 5.4pt; background: red none repeat scroll 0% 0%; width: 171pt;" width="228" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">False Positive (0,1)</p>
</td>
<td style="padding: 0in 5.4pt; background: #92d050 none repeat scroll 0% 0%; width: 198.9pt;" width="265" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">True Positive (1,1)</p>
</td>
</tr>
</tbody>
</table>
<p style="margin: 0in 0in 10pt;">
<p style="margin: 0in 0in 10pt;">Assuming the results of the detector are positive, then assuming the probability of detection (true positive) is α, the probability of getting a false positive is (1-α). Unless α is pretty high, the probability for a false positive will be significantly high (so that it cannot be ignored).</p>
<p style="margin: 0in 0in 10pt;">The same logic works for the False Negative and False Negative pairs. See <a href="http://en.wikipedia.org/wiki/Type_1_error#Type_I_and_type_II_errors">http://en.wikipedia.org/wiki/Type_1_error#Type_I_and_type_II_errors</a> for more data.</p>
<p style="margin: 0in 0in 10pt;">So what affects α? What are the parameters that would affect the quality of the results? What would we need to improve the results of the lie detector?</p>
<p style="margin: 0in 0in 10pt;">In RADAR, α is related to a mathematical ratio between the signal and noise (amply called the SNR or Signal-to-Noise-Ratio). Signal would be the property we want to detect while while noise would be any other noise source.</p>
<table class="MsoTableGrid" style="border-collapse: collapse; mso-border-alt: solid black .5pt; mso-border-themecolor: text1; mso-yfti-tbllook: 1184; mso-padding-alt: 0in 5.4pt 0in 5.4pt;" border="1" cellspacing="0" cellpadding="0">
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<p style="margin: 0in 0in 0pt; line-height: normal;">
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<td style="padding: 0in 5.4pt; width: 2.25in; background-color: transparent;" width="216" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Examples of signal sources</p>
</td>
<td style="padding: 0in 5.4pt; width: 198.9pt; background-color: transparent;" width="265" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Example of background noise sources</p>
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<p style="margin: 0in 0in 0pt; line-height: normal;">RADAR</p>
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<td style="padding: 0in 5.4pt; width: 2.25in; background-color: transparent;" width="216" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Reflection from a real airplane</p>
</td>
<td style="padding: 0in 5.4pt; width: 198.9pt; background-color: transparent;" width="265" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Reflection from a real cloud</p>
</td>
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<tr style="mso-yfti-irow: 2;">
<td style="padding: 0in 5.4pt; width: 117.9pt; background-color: transparent;" width="157" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">SONAR</p>
</td>
<td style="padding: 0in 5.4pt; width: 2.25in; background-color: transparent;" width="216" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Submarine propeller noise</p>
</td>
<td style="padding: 0in 5.4pt; width: 198.9pt; background-color: transparent;" width="265" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">School of snapping shrimp</p>
</td>
</tr>
<tr style="mso-yfti-irow: 3; mso-yfti-lastrow: yes;">
<td style="padding: 0in 5.4pt; width: 117.9pt; background-color: transparent;" width="157" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Lie Detector</p>
</td>
<td style="padding: 0in 5.4pt; width: 2.25in; background-color: transparent;" width="216" valign="top">
<p style="margin: 0in 0in 0pt; line-height: normal;">Sweat, anxiety of a lying person</p>
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<p style="margin: 0in 0in 0pt; line-height: normal;">Sweat, anxiety of an (in this case) honest person fearful of an unnatural test</p>
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<p style="margin: 0in 0in 10pt;">So it is imperative that if a detector is to be used, that it is fully understood in the context of its usage.</p>
<p style="margin: 0in 0in 10pt;">For example, I would assume that lie detectors will be fairly reliable in detecting teenagers that are using drugs. I say this because of the following:</p>
<p style="margin: 0in 0in 0pt 0.5in; text-indent: -0.25in; mso-list: l1 level1 lfo1;">1.   Teenagers have probably been using the drugs for a limited amount of time. So the emotional response to the concept of lying about it is still strong.</p>
<p style="margin: 0in 0in 0pt 0.5in; text-indent: -0.25in; mso-list: l1 level1 lfo1;">2.   Making a mistake is reasonably ‘acceptable’:</p>
<p style="margin: 0in 0in 0pt 1in; text-indent: -0.25in; mso-add-space: auto; mso-list: l1 level2 lfo1;">a.   False positive: blood test will clear that up, or at worst the teenager will go to counseling</p>
<p style="margin: 0in 0in 10pt 1in; text-indent: -0.25in; mso-add-space: auto; mso-list: l1 level2 lfo1;">b.   False negative: Same result as having not conducted the test</p>
<p style="margin: 0in 0in 10pt 0.75in;">Note: Sure there might be extreme responses to these types of tests, but overall the use is appropriate.</p>
<p style="margin: 0in 0in 10pt;">Using the same criteria I would stipulate that testing if a long term FBI agent is an existing spy is a bad use for lie detection:</p>
<p style="margin: 0in 0in 0pt 43.5pt; text-indent: -0.25in; mso-add-space: auto; mso-list: l0 level1 lfo2;">1.   If the FBI agent is an existing spy, it is more than likely that their false reality has become their reality. Lying is real to them, so they have no emotional response associated with lying (it is the least of their “vices”)</p>
<p style="margin: 0in 0in 0pt 43.5pt; text-indent: -0.25in; mso-add-space: auto; mso-list: l0 level1 lfo2;">2.   Making a mistake can lead to disastrous results:</p>
<p style="margin: 0in 0in 0pt 79.5pt; text-indent: -0.25in; mso-add-space: auto; mso-list: l0 level2 lfo2;">a.   False positive: Agent is “caught” and researched. Trust is no longer there and a good person is removed from activity.</p>
<p style="margin: 0in 0in 10pt 79.5pt; text-indent: -0.25in; mso-add-space: auto; mso-list: l0 level2 lfo2;">b.   False negative: How many American operatives were compromised by Robert Hansen? Need more be said? Trust is, in fact, accentuated and reestablished by the results of the test.</p>
<p style="margin: 0in 0in 10pt;">But detection theorem is not limited to the military or to lie detectors. As more and more systems are used to make sense of the world around us, to package and repackage information automatically, we see the results of different detectors around us:</p>
<p style="margin: 0in 0in 10pt;">Search engines – What do false positives mean? Well, ask the founders of all the search engines that competed with Google. Relevancy counted. And the results were translated into countless Billions of dollars.</p>
<p style="margin: 0in 0in 10pt;">Cell phone – Just how better is digital coding of the transmission? Just compare the modern language of cellular technology “can you hear me now?” vs. the past (fading in and out). Sure you can squeeze more channels in, but analog (like Verizon) is still a better quality medium for our human detectors.</p>
<p style="margin: 0in 0in 10pt;">Security – In the past, security was ‘1’ or ‘0’ either a port was open or not. Tapping into a NIC would allow us to step through the traffic. An application was allowed to load or not. Today, we see the first waves of “intelligent systems”. Systems which try to elevate (detect) the “nasty” stuff by prioritizing the display of activities related to un-patched vulnerabilities among the clutter of less disruptive activity. Similarly, DLP solutions have detectors included within the applications (to distinguish between confidential and other data). Cost of a bad choice? Perhaps 17 FTE…</p>
<p style="margin: 0in 0in 10pt;">Auto-defibrillators: yes, those yellow boxes at airports and upscale malls. These detect heart activity, and based on heart activity can provide defibrillation pulses. For the sake of the users, I hope that automated detector is designed right.</p>
<p style="margin: 0in 0in 10pt;">As a summary, detection (as opposed to a simple decision) is here to stay, and to have detector design compromises that will have certain systems providing better results than others.</p>
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