Snort mailing list archives
Re: searching for dirty word search software
From: Andrew Daviel <andrew () andrew triumf ca>
Date: Mon, 24 Sep 2001 15:37:48 -0700 (PDT)
On Mon, 24 Sep 2001, Diehl Sgt Kristin F wrote:
Anyone know of a good product to search for "dirty words" with in email clients? Kristin Diehl
In Unix/sendmail, one can use procmail, currently the default local delivery agent, to search the message body for certain words. This could be used to quarantine mail - redirect it to some person or agent who is going to process it further - or deliver it to a special mail folder. I'm not sure single-word trapping is very useful though - for instance, I had a message on an industry list (no kids) bounced when I said something like "this problem was a (female dog) to solve" - not, I think, offensive or off-topic to the majority of members of a list like snort-users. And looking at my spam mailbox for adult advertising suggests that they are often avoiding "dirty words" in the text. I have a problem like this on a free website listing service I run - the site is supposed to be rated general, yet some automated agents were submitting adult sites. I solved that by searching for keywords and keeping score - a single word such as %63%75%6d%73%68%6f%74 which doesn't tend to appear in normal text is enough to get banned, while words such as %63%75%6e%74 or %66%75%63%6b used often as expletives would have to occur more than once or in combination for a page to be banned. This was perhaps an easier problem than mail - the authors were really trying to get found in search engines, not avoid detection, so they often overload with "adult" keywords. I have been collecting some spam with a view to trying a similar thing on email, but as I say the authors are trying to avoid being filtered. A heuristic based on things like ( teen NEAR ( movie OR free ) ) might work. Seems like a job for a neural network. -- Andrew Daviel, TRIUMF, Canada Tel. +1 (604) 222-7376 security () triumf ca _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- searching for dirty word search software Diehl Sgt Kristin F (Sep 24)
- Re: searching for dirty word search software Andrew Daviel (Sep 24)