Re: An OCR plug-in for Spamassassin

[Nick FitzGerald <nick () virus-l demon co uk>]

Drsolly wrote:

> Or they could use the same methods used in Captchas, making the graphics 
> almost unreadable. 
>
> I already find most spam unreadable.

You aren't thinking about this the right way.

I can think of a brilliant way to render even "perfect" OCR (i.e. OCR 
as accurate as a typical human eye, and therefore immune to any kind of 
visual captcha obfuscuation that leaves a text message readable to a 
human) useless with graphics-only Email...

At the risk of helping the scumbag spammers, imagine what you could 
easily achieve with overlaid images each with a large-ish area of 
transparency and partial representation of each letter.


Regards,

Nick FitzGerald

_______________________________________________
Fun and Misc security discussion for OT posts.
https://linuxbox.org/cgi-bin/mailman/listinfo/funsec
Note: funsec is a public and open mailing list.