Re: I-worm/Klez and a GIF query/question
| From: | Hugh Bothwell | Date: | Fri, 03 May 2002 20:58:43 +0000 |
| Subject: | Re: I-worm/Klez and a GIF query/question | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-95978@lists.php.net to get a copy of this message | ||
"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 :-)