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Re: [Asrg] How to defeat spam that uses encryption?

2003-04-01 07:16:58
On Monday, Mar 31, 2003, at 22:41 US/Eastern, Art Pollard wrote:
Anyway, what they do is misspell words. They use < and > to make "se><" for example, 1's for l's 0's (zeros) for o's, etc. It is of course harder to read but the message is still quite understandable. What is more, it makes it virtually impossible for a filtering mechanism to catch it unless the various tricks such as this were programmed into it directly.

On the contrary, Bayesian spam filtering will learn that in no time. It'll notice that 100% of messages that contain "se><" or "v1agra" are spam. It's actually far easier to filter for that; as someone's pointed out already, use of attempts to get around spam filtering is a very good indicator of spamminess.


mathew

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