On Wed, 2009-05-20 at 19:59 +0200, Mark Martinec wrote:
> Karsten wrote:
> > That's trivial to do with pure HTML, too, no need for funky tricks some
> > MUAs might not understand or render. Oh, and it actually is even
> > trivial to do with the MIME structure and a spammy text/plain payload.
>
> Certainly. But it can't be worse that skipping a contents filter altogether.
>
> Until sending large spam with a 0.5 MB of padding becomes popular, filtering
> a truncated message can still be effective. At least, the header section is
> still a wealthy source of information.
Sure. I didn't mean to say it's unfeasible -- just venting some more
ways to do this, while "supporting" widely-used MUAs today. ;)
Frankly, I hope such crude obfuscation and evasion techniques won't ever
become popular. On the other hand, they are likely to slow down spam
emission.
guenther
--
char *t="\10pse\0r\0dtu...@ghno\x4e\xc8\x79\xf4\xab\x51\x8a\x10\xf4\xf4\xc4";
main(){ char h,m=h=*t++,*x=t+2*h,c,i,l=*x,s=0; for (i=0;i<l;i++){ i%8? c<<=1:
(c=*++x); c&128 && (s+=h); if (!(h>>=1)||!t[s+h]){ putchar(t[s]);h=m;s=0; }}}
