email addresses inside. Has anyone heard of spammers decompiling swf's to
strip out email addresses? just curious
-seth
-----Original Message-----
From: Jochem van Dieten [mailto:[EMAIL PROTECTED]
Sent: Friday, November 21, 2003 10:23 AM
To: CF-Talk
Subject: Re: AntiSpam Technique: Output to images instead of text
Ubqtous said:
> On 11/21/2003 at 10:01, you wrote:
>
> JvD> No need to loop, just do a regex replace:
> JvD> REReplaceNoCase(email,".","<img src=""> > alt=""\1"">","All")
>
> JvD> Of course you need to have the images xax.gif, xbx.gif, ...,
> JvD> x.x.gif and [EMAIL PROTECTED] somewhere. The extra x'es are required
> JvD> because some filesystems break when you start a filename with a .
> JvD> or a @, and you need to force a lowercase on case-sensitive
> JvD> filesystems.
>
> Very nice! Need to learn more about back references :)
>
> Question: Would a harvester be able to piece together the ALT text
> into a usable address?
Of course. You can do it, I can do it, so by extrapolation a spammer
can do it and adapt his scripts. But that goes for every obfuscation.
However, using:
<img src="" alt="m">
<img src="" alt="e">
<img src="" PROTECTED]" alt="@">
<img src="" alt="m">
<img src="" alt="y">
<img src="" alt="d">
<img src="" alt="o">
<img src="" alt="m">
<img src="" alt="a">
<img src="" alt="i">
<img src="" alt="n">
with arbitrary characters instead of the x is much less common as using:
me@mydomahn
so I would expect there to be more scripts to decode the latter.
Jochem
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