Graham's spam filter
Erik Max Francis
max at alcyone.com
Wed Aug 28 23:32:12 CEST 2002
Matt Gerrans wrote:
> > I hang out on photography newsgroups and sometimes strangers send me
> > pictures. I might not have exactly asked for those pictures, but
> > they're certainly not spam. On the other hand, spammers may also
> > start sending advertisements out as images, and it will be very hard
> > to filter those.
> With no accompanying comment?
Text can be rendered in images, y'know.
In fact, most of the false negatives (actual spawm which gets through my
filter) these days is the kind that is wholly MIME encoded (except for
the Subject, obviously). It's getting to the point where I have no
choice but modifying my (rule-based) spam filter to unpack textual MIME
types and process them as well.
Erik Max Francis / max at alcyone.com / http://www.alcyone.com/max/
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