It's getting worse

Sat Mar 29 22:42:58 CET 2003

* Boris 'pi' Piwinger <3.14 at logic.univie.ac.at> wrote:
> For several days now I observe that I get more and more spam
> not recognized by bogofilter.

In case it was useful for development, I confirm this. Spammers have
started using more and more creative techniques with the HTML comments.

I am using the latest stable version of bogofilter (0.11.1.3).

Here's one example I got,

<html>
<body
 
As seen on N<! FF3FFi?FS$s0,sz>B<! FF3FFi?FS$s0,sz>C, C<! FF3FFi?FS$s0,sz>B<! FF3FFi?FS$s0,sz>S, C<! FF3FFi?FS$s0,sz>N<! FF3FFi?FS$s0,sz>N, and even O<! FF3FFi?FS$s0,sz>p<! FF3FFi?FS$s0,sz>rah. 
As reported on in the New En<! FF3FFi?FS$s0,sz>gland Jou<! FF3FFi?FS$s0,sz>rnal of Medi<! FF3FFi?FS$s0,sz>cine. 
Reverses ag<! FF3FFi?FS$s0,sz>ing while bur<! FF3FFi?FS$s0,sz>ning f<! FF3FFi?FS$s0,sz>at, without dieting or exercise. 
Forget aging and die<! FF3FFi?FS$s0,sz>ting forever And it's Gu<! FF3FFi?FS$s0,sz>arant<! FF3FFi?FS$s0,sz>eed! 
 
[rest of the message snipped]

Which my text browser of choice (w3m) rendered to,

As seen on NBC, CBS, CNN, and even Oprah.
As reported on in the New England Journal of Medicine.
Reverses aging while burning fat, without dieting or exercise.
Forget aging and dieting forever And it's Guaranteed!
[rest of the message snipped]

While the relevant part of 'bogolexer -p < message' output was,

seen  and  even  rah  reported  the  new  gland  jou  rnal  medi  cine
reverses  ing  while  bur  ning  without  dieting  exercise  forget  aging  and
die  ting  forever  and  it's  arant  eed
[newlines converted to two spaces for more compact output]