Re: I-worm/Klez and a GIF query/question

From: Date: Fri, 03 May 2002 20:58:43 +0000
Subject: Re: I-worm/Klez and a GIF query/question
References: 1  Groups: php.general 
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"R" <r@jumac.com> wrote in message news:007501c1f304$3c1607a0$0a6da8c0@lgwezec83s94bn... > at the end of the form he wants a "key" gif...(A gif with a number) > that is automatically generated and that number has to be entered into the > text box....the idea is that it prevents automaited registerations..... I've seen code that puts out an image that is .gif-compatible (ie can be viewed in any browser) but is not LZH-compressed, ie does not fall under the patents. I could write a PHP file to do it... The drawback, of course, is no compression; but for a small image that shouldn't be a problem. NOTE that for someone sufficiently persistent, they could still pattern-match the generated image to retrieve the number and auto-register that way. (I could write a PHP file to do that, too :-)

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