[EMAIL PROTECTED] wrote: > Tony> Sorry if this is already included. Would a simple > hash of the > Tony> image file be useful for eliminating spam? A lot of > spams seem to > Tony> send the same image with completely different text. > > Maybe, though maybe not. They do make changes in the image > as well. I just > saw several of the same one where there were various changes: font, > blinking, etc. Also, with the pump & dump scams they seem to keep you > "updated" on the rising price of the stock as time goes on. > Any of those > would change the hash. I am already computing the log of the > size (then > truncating to an int). I suspect that would be less > sensitive to minor > changes in the image. > There also was an article on a murdered Russian spammer, who randomly changed the colors of a few pixels in each copy of the image to defeat just this tactic.
-- Jim McMaster mailto:[EMAIL PROTECTED] _______________________________________________ [email protected] http://mail.python.org/mailman/listinfo/spambayes Check the FAQ before asking: http://spambayes.sf.net/faq.html
