New phishing tactic falling through the net

Julian Field MailScanner at ecs.soton.ac.uk
Tue Feb 22 13:50:43 GMT 2005


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John Wilcock wrote:

> Julian Field wrote:
>
>> Message.pm patch attached which implements this trap. That was a
>> toughie, took me 45 minutes!
>
>
> Not sure whether you're being sarcastic about the toughness or not :-)

No, it will was pretty nasty.

> Anyway, it doesn't seem to be working properly.

Damn, the example you sent me before worked just fine. Can you try that
example and see if it works for you?

The other thought is why don't I just ban imagemaps altogether. They
could be disarmed like everything else. Does anyone really need
imagemaps in email messages?

Thoughts?

>
> I sent it the following (telnetting in and making it up as I go along!):
>
>> <a href="http://www.example.yourbank.com/">
>> <map name="mymap"><area coords="0,0,100,100" shape="rect"
>> href="http://www.example.phisher.com/hook"></map>
>> <img src="http://whatever" usemap="#mymap"></a>
>
I just tried this one and it worked for me.
I got this:
<a href="http://www.example.yourbank.com/"><font
color="red"><b>MailScanner has detected a possible fraud attempt from
"www.example.phisher.com" claiming to be </b></font>
<map name="mymap"><area coords="0,0,100,100" shape="rect"
href="http://www.example.phisher.com/hook"></map>
<img src="http://whatever" usemap="#mymap"></a>

>>
>
> MS clearly noticed *something*, because there's an extra </map> in what
> I got back:
>
>> <a href="http://www.example.yourbank.com/"></map>
>> <map name="mymap"><area coords="0,0,100,100" shape="rect"
>> href="http://www.example.phisher.com/hook">
>> <img src="http://whatever" usemap="#mymap"></a>
>
>
> John.
>
> --
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