Re: Attempts to poison bayesian systems

2003-12-23 Thread Lucas Albers
Russell Coker said: > Also it makes it slightly more difficult for good filters to catch the > spam, > but at the cost of making the spam less effective. > > Guys who will get their credit card out when reading a clear message > offering > to double their penis size probably won't do so if the pen

Re: Attempts to poison bayesian systems

2003-12-23 Thread Lucas Albers
Russell Coker said: > Also it makes it slightly more difficult for good filters to catch the > spam, > but at the cost of making the spam less effective. > > Guys who will get their credit card out when reading a clear message > offering > to double their penis size probably won't do so if the pen

Re: Attempts to poison bayesian systems

2003-12-23 Thread Russell Coker
On Wed, 24 Dec 2003 01:22, "Jason Lim" <[EMAIL PROTECTED]> wrote: > That won't work very well with Spamassassin, as it doesn't rely on > bayesian filtering alone, and also uses header check and dnsbl checks. So > you are correct... it does lower the bayesian score with these "random > legitimate" s

Re: Attempts to poison bayesian systems

2003-12-23 Thread Jason Lim
> One technique that's being used a lot is to get books in electronic form and > put a coupld of sentences in every spam (sentences from a book will pass > gramatical checking etc, unlike the example you posted above). Also text > from a book will have the right ratio of words, you will almost nev

Re: Attempts to poison bayesian systems

2003-12-23 Thread Russell Coker
On Wed, 24 Dec 2003 01:22, "Jason Lim" <[EMAIL PROTECTED]> wrote: > That won't work very well with Spamassassin, as it doesn't rely on > bayesian filtering alone, and also uses header check and dnsbl checks. So > you are correct... it does lower the bayesian score with these "random > legitimate" s

Re: Attempts to poison bayesian systems

2003-12-23 Thread Russell Coker
This discussion has some minor relevance to debian-isp, but nothing to do with debian-security. Let's move the discussion to debian-isp. On Wed, 24 Dec 2003 00:25, Dale Amon <[EMAIL PROTECTED]> wrote: > I've been noticing loads of mails like this lately: > > emery atrocious larval drippy elate

Re: Attempts to poison bayesian systems

2003-12-23 Thread Jason Lim
> One technique that's being used a lot is to get books in electronic form and > put a coupld of sentences in every spam (sentences from a book will pass > gramatical checking etc, unlike the example you posted above). Also text > from a book will have the right ratio of words, you will almost nev

Re: Attempts to poison bayesian systems

2003-12-23 Thread Russell Coker
This discussion has some minor relevance to debian-isp, but nothing to do with debian-security. Let's move the discussion to debian-isp. On Wed, 24 Dec 2003 00:25, Dale Amon <[EMAIL PROTECTED]> wrote: > I've been noticing loads of mails like this lately: > > emery atrocious larval drippy elate