Spam in images

[Eric Wood]

----- Original Message ----- 
From: "Tom Anderson"
> The email's "random" text was more damning though, with terms like
> "cried", "wont", "quarrelsome", etc., apparently not showing up in my
> hams very often at all.  But perhaps even more surprisingly, bogofilter
> is apparently already filtering inline images for me, with "mime:gif",
> "head:type", "mime:image", "mime:Content-ID", and "head:related" all
> very spammy.  So there's not much reason to add additional filtering in
> this regard anyway!

Umm.  The way I read you is that your promotion for people to use inline 
images will yield a high spammy result.  Having bogofilter train on image 
spam will cause poisoning and eventual false positives.

For example, one current problem I have is that my users have recently asked 
for their Ebay passwords to be changed.  Ebay sends them an email 
confirmation in which the user never gets.  This is because bogofilter saw 
it as spam.  This is because of all the "fishing" scam emails look exactly 
like an official Ebay message including all the verbage and all but one 
legit url.  Bogofilter trained (thanks to -u) on all these slightly various 
fishing emails.   Now, when the legit email comes in - it can't help but 
classify it as spam.

This "token poisoning" isn't a big deal for me yet.  And I don't want it to 
get bad.  But I fear that if I train bogofilter on image spams,  I'll be 
caught in a never ending cycle of re-training.   I rarely do any training.

Hey, I'm with you and I'm not arguing or anything.  I honestly do challenge 
my own thought processes and am open to other ideas.

-eric wood