[JDEV] Jabber and spam?

[David 'TheRaven' Chisnall]

No, a to-fake-script for that would be trivial to write.  It just 
returns 'a' every time, and if it fails retrys.  It will get through in 
1/3 of cases, which is more than adequate for spammers.  At least with 
alphanumericals they only get through 1/36 of the time (or 1/62 if case 
sensitive) so they need to use some kind of OCR.  

If the images can be generated easily by the server and require (for 
example) an order of magnitude more computing power to decode then this 
will act as a deterent, since the spammers will require expensive 
hardware to get a resonable rate, and if they can only send spam slowly 
then they can quickly be identified and more active measures can be 
taken (IP blocks, thumbscrews etc.)

Mattias Campe wrote:

> You don't have to stick with numbers and letters. A picture could also 
> be send, while the server asks (...through jabber:x:data?):
>
> "What do you see on the picture?"
> A) A child playing with a ball
> B) A horse
> C) A glass of milk
>
>
> That to-fake-script will probably be a bit harder to write :p.
>
>
>
> Mattias
>
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