[SGVLUG] How fast spam spiders work.

[Emerson, Tom]

> -----Original Message-----
> Behalf Of Mike Morris
> >serross at ix.netcom.com wrote:
> >>There are many incripters out there that will [hide e-mail addresses]
[...]
> [snipped link to on-line obfuscator]
> 
> A really simple way that I have used at several web sites is:
> 
>  > <script language="JavaScript"><!--
>  > document.write ('<a href="')
[etc.]
> 
> Of course, now that I've posted this trick, the spiders will 
> figure it out...

Both of these techniques rely on javascript, which means they both have the same weakness: when spammers "determine" that enough people are doing this, they'll simply include "javascript resolution" to their bag-of-tricks -- i.e., they'll simply execute the javascript to get the "decoded" output and parse the resulting HTML.