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	<title>PHP Programming &#187; PHP GD</title>
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	<description>A blog about Linux, Apache, MySQL, PHP and web application security</description>
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		<title>Breaking a CAPTCHA &#8211; rules for good design</title>
		<link>http://www.idontplaydarts.com/2009/06/breaking-a-captcha-rules-for-good-design/</link>
		<comments>http://www.idontplaydarts.com/2009/06/breaking-a-captcha-rules-for-good-design/#comments</comments>
		<pubDate>Sun, 07 Jun 2009 16:10:08 +0000</pubDate>
		<dc:creator>Phil</dc:creator>
				<category><![CDATA[Security]]></category>
		<category><![CDATA[Captcha]]></category>
		<category><![CDATA[PHP GD]]></category>
		<category><![CDATA[Web development]]></category>

		<guid isPermaLink="false">http://www.idontplaydarts.com/?p=122</guid>
		<description><![CDATA[The main problem with the Captcha is that sometimes the people who implement them are lazy or have no knowledge about how create an image that a computer would find hard to decode. Captchas must be generated server side and over the last few months I have seen an increase in the number of client-side captchas generated by software such as Adobe Flex. If you generate a Captcha client side it is not secure.]]></description>
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